Q: solve the equation 8.3x-6.2x = 8.4

Q: solve the equation 8.3x-6.2x = 8.4

8.3X-6.2X=8.4
2.1X=8.4
X=4

Solution equation: 3x / 6 + 2x / 8 = 3
This is a division sign,

3x/6+2x/8=3
x/2+x/4=3
(2x+x)/4=3
3x=3*4
x=4

When I solve the equation, the result is x + 2x-3x = - 3 = 2-2, that is, 0 = - 3. What's the next step?

The next step is: the equation has no solution

Bivariate linear equation (x + Y-3) = 1 + 9 (2x-y-1) y + 2 (x-1) = 3 (3x + 2y-6)
3 (x + Y-3) = 1 + 9 (2x-y-1) y + 2 (x-1) = 3 (3x + 2y-6)
It is known that 4x-3y-6z = 0
x+2y-7z=0
Find the value of the second part of X (the second power of 2x + the second power of 3Y + the second power of 6Z)

1. (x + Y-3) / 3 = 1 + (2x-y-1) / 9, - "x + 4Y = 17, y + (x-1) / 2 = (3x + 2y-6) / 3, -" 3x-2y = 9, - "x = 5, y = 3; 2, 4x-3y-6z = 0, -" 4x-3y = 6Z, x + 2y-7z = 0, - "x + 2Y = 7z, -" x = 3Z, y = 2Z, - "original formula = (2 * 9z ^ 2 + 3 * 4Z ^ 2 + 6Z ^ 2) / (9z ^ 2 + 5 *..."

2x-2 = 0 solving equation and checking calculation

2x-2=0
2x=2
x=1
Substituting x = 1 into the original equation
Left = 2 * 1-2 = 0
Right = 0
Left = right
So the solution of this equation is x = 1

2X = 1.6 solve the equation and check it

2x=1.6
x=1.6÷2
x=0.8
checking calculation:
Left side of equation = 2 × 0.8 = 1.6 = right side of equation
So, x = 0.8 is the solution of the equation

Solution equation: 24-1 / 2x = 12

Transference
1/2x=24-12
1/2x=12
x=12÷1/2
x=24

24 * 0.5-3x = 7 solution equation

24*0.5-3x=7
3x=12-7
3x=5
x=5/3

Solving equation (3x + 2) / 3-1 = (2x-1) / 4 - (2x-5) / 5

(3x + 2) / 3-1 = (2x-1) / 4 - (2x-5) / 560x + 40-60 = 30x-15-24x + 60; 60x-20 = 6x + 45; 54x = 65; X = 65 / 54; please accept if you agree with my answer, please accept it in time, ~ if you agree with my answer, please click the [accept as satisfactory answer] button in time ~ ~ friends who ask questions on the mobile phone are on the right side of the client

How to solve 25 + 0.2x = 0.3x?

Transference
0.3x-0.2x=25
0.1x=25
x=25÷0.1
x=250