How to calculate the equation x divided by 5 = (x + 14) divided by 9

How to calculate the equation x divided by 5 = (x + 14) divided by 9

x/5=(x+14)/9
It is concluded that 9x = 5 (x + 14)
The solution is x = 35 / 2

How to solve the equation of 0.9 times x = 5.6

0.9X=5.6
X=5.6/0.9
X=56/9

How to solve the equation?

2/3×6/5=x/9

(1 - √ 3 △ 3) x = 50, what is x equal to

x＝50/（1-√3/3）
x=50（1+√3/3）/（2/3）
x＝25（1+√3/3）*3
x＝75+25√3

sin35°−sin25°cos35°−cos25°=______ ．

The original formula = sin (30 ° + 5 °) − sin (30 ° − 5 °) cos (30 ° + 5 °) − cos (30 ° − 5 °) = sin30 ° cos5 ° + cos30 ° sin5 ° - (sin30 ° cos5 ° − cos30 ° sin5 °) cos30 ° cos5 ° − sin30 ° sin5 ° - (cos30 ° cos5 ° + sin30 ° sin5 °) = 2cos30 ° sin5 ° - 2sin30 ° sin5 ° = - 3

How to solve 1-0.5x = 2-2x

1-0.5x=2-2x
2x-0.5x=2-1
1.5x=1
x=1/1.5=2/3

What is 60 divided by 5 / 11

How to solve the 18 + 8x = 31 + X equation

18+8x=31+x
8x-x=31-18
7x=13
x=13/7

Sin40? = a, find cos40
Explain the process briefly

sin40°^2+cos40°^2=1
Cos40 ° = radical (1-sin40 ° ^ 2) = radical (1-A ^ 2)

Let x1, X2 and X3 be the three roots of the equation x ^ 3 + PX + q = 0DE, then | X1 x2 x3 | = | X3 X1 x2 | x2 X3 x1|

The value of determinant is calculated, and then sorted into the form related to X1 + x2 + X3, x1x2 + x2x3 + x3x1, x1x2x3. The coefficient can be obtained by using the Veda theorem of cubic equation