Solve the equation 4x + 10 = 6x, I know x = 5,

Solve the equation 4x + 10 = 6x, I know x = 5,

4x+10=6x
6x=4x+10
6x-4x=4x+10-4x
2x=10
X=5
10 = 2x
x=10÷2=5
Move 4x to the right, the left equals 10, the right equals 2x, so x = 5
4x-6x=-10
-2x=-10
X=5
A problem of Coulomb's theorem in Physics
Why is it wrong to make the Coulomb force increase infinitely if two small balls with points are close to each other
First of all, charged particles can not be infinitely close, when the distance is reduced to a certain range, the repulsive force will increase greatly. Second, Coulomb's law is a formula that takes two charged spheres as particles, that is, does not consider the radius of the charged body itself. However, when the distance is infinitely close, the radius can not be ignored, and Coulomb's law is no longer applicable
When the two balls coincide, the distance is 0 and the Coulomb force is 0
How to solve the equations 3x + 2Y = 14 4x-6y = 10
3x+2y=14 ①
4x-6y=10②
① Three times
9x+6y=42③
② + 3
13x=52
X=4
Substituting x = 4 into (1) yields
3*4+2y=14
Y=1
∴x=4,y=1
Multiply the second equation by three to get the first equation
13x=52
X=4
Take in the first equation
Y=1
The substitution elimination method is used.
Is it hard?
3 times (3x + 2Y = 14) is 9x + 6y = 42 (1)
4x-6y=10………… (2)
（1） Plus (2) is 13X = 52 x = 4
Substituting x = 4 into 3x + 2Y = 14 yields y = 1
x=4,y=1
How to solve the equation 6x-24 = 4x + 30?
.
6x-4x-24=30
2x=30+24
2x=54
x=54÷2
x=27
2x = 54 x =27
6x-24=4x+30→2x=54→x=27
6x-24=4x+30
6x-4x=24+30
2x=54
x=27
The process is as follows:
2x=54
x=27
6x-24=4x+30
2x=54
x=27
6X-4X=30+24
2X=54
X=27
You can move items first:
6x-4x=30+24
2x=54
x=27
6x-4x-24=30
2x=30+24
2x=54
x=54÷2
x=27
We need the formula of simple harmonic motion. What does physical quantity mean?
F = - KX (k is the spring stiffness coefficient) Hooke's law equation of motion: F = ma = - KxK / M = w * W angular velocity relation a amplitude A (arr method) constant a + W * Wx = 0, so x = ACOS (WT + a (arr method)) = = = = v = - wasin (WT + a (arr method)) a = - w * Wx energy E_ k=1/2mv^2=0.5mw^2A^2sin^2(wt+a)E_ p=1/kx^2=...
Solve the equation 3 / 4x = 5 / 6 1 / 5 + 4x = 4 / 5 X-2 / 3x = 2 / 9
Calculate, write the necessary calculation process
36/25×75 11/8×20/19 6/7×21 16/5×3÷4/5
25/9÷5/4÷4/5 （7/8+13/16）÷13/16
Calculation
3/4×3/1÷19/20 2/5×4+2/5 （21/8-4/1+3/8）×4/3
（4/5×1/9）×45 89×87/88 5/7×5/12+5/7×7/12
3/4x=5/6 x=5/6*4/3x=10/91/5+4x=4/54x=3/5x=3/20x-2/3x=2/91/3x=2/9x=2/336/25×75 =36*3=10811/8×20/19 =11/2*5/19=55/386/7×21=6*3=1816/5×3÷4/5=16/5*3*5/4=4*3=1225/9÷5/4÷4/5=25/9*4/5*5/4=25/9（7/8+13...
What's the meaning of this? Asking questions: making questions
Solve the system of linear equations of three variables, 14x-4y + 2Z = 9,3x + 2Y + 4Z = - 2,6x-4y-2z = 7, find the value of X, y, Z?
14x-4y+2z=9
6x-4y-2z=7
Add:
20x-8y=16
5x-2y=4
3x+2y+4z=-2,①
6x-4y-2z=7②
①+②*2
15x-6y=12
5x-2y=4
therefore
Let y = K
x=(2k+4)/5
Z is solvable
By K, there are infinitely many solutions
The formula of the law of universal gravitation? Specify the physical quantity
F = law content: in nature, any two objects are attracted to each other. The magnitude of gravity is directly proportional to the product of the mass of two objects and inversely proportional to the square of the distance between two objects. The formula is: F = g * m1m2 / (R * r) (g = 6.67 × 10 ^ - 11n & ᦇ 8226; F = g * m1m2 / (R * r) (g = 6.67 × 10 ^ - 11n & ᦇ 8226); M ^ 2 / kg ^ 2) f: the gravitation between two objects G: the constant of universal gravitation M1: the mass of object 1 m2: the mass of object 2 R: the distance between two objects according to the international system of units, the unit of F is Newton (n), the unit of M1 and M2 is kilogram (kg), the unit of R is meter (m), the constant G is approximately equal to 6.67 × 10-11 power n · M2 kg - 2 power
（x-3）/2+（2x-4）/3+（3x-5）/4+…… +（8x-10）/9=（3x-1）/2+（4x-2）/3+…… +（10x-8)/9 x=
（-2x-2)/2+（-2x-2)/3+（-2x-2)/4+… +（-2x-2)/9=0 （-2x-2)*（1/2+1/3+1/4+1/5+… +1/9)=0 -2x-2=0 -...
Solution equation: (1) 7 / 5-3x = 0.4 (2) 5 / 14x + (5 / 6) * (6 / 5)
（1） 7 / 5-3x = 0.4
3x=7/5-0.4=1.4-0.4=1
x=3*1=3
（2） 5 / 14x + (5 / 6) * (6 / 5) is not equation (no equal sign)
（1） 7 / 5-3x = 0.4
-3X=0.4-7/5
X=1/3
（2） It's not an equation, there's no equal sign