3x-9=7x

Simple and best practice solution for 3x-9=7x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x-9=7x equation:


Simplifying
3x + -9 = 7x

Reorder the terms:
-9 + 3x = 7x

Solving
-9 + 3x = 7x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7x' to each side of the equation.
-9 + 3x + -7x = 7x + -7x

Combine like terms: 3x + -7x = -4x
-9 + -4x = 7x + -7x

Combine like terms: 7x + -7x = 0
-9 + -4x = 0

Add '9' to each side of the equation.
-9 + 9 + -4x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -4x = 0 + 9
-4x = 0 + 9

Combine like terms: 0 + 9 = 9
-4x = 9

Divide each side by '-4'.
x = -2.25

Simplifying
x = -2.25

See similar equations:

| 5000/18000*100 | | 0.4x+0.4x=7 | | x=13y-11 | | -3(-6v+8)-v=3(v-9)-9 | | a+16=29 | | (55x+60y)-(16x-8y)= | | 2y*y+3y*y=0 | | -2w+10=2 | | 2(3y-2)=2y+2 | | 2(3y-2)=2y+3 | | 41.5=3.5x-4 | | 2+(3a-4b)-(2+b)= | | 2+9=-27 | | 5(6-5y)+y(2x+7)=0 | | -8=2w+2 | | X/0.25=0 | | (6x-4)=4x | | -2c+7=3 | | 7n+10-8=6 | | x=13+7y | | 45=w+8w | | 7/4d=14 | | -5x+42=8 | | 5y+17=57 | | 2-4/3z=z-7/6 | | -3(3)(-3)^2-(-5/3)(3)(5) | | 5x(y+8)+3(x-8)=0 | | 2x-3(x-5)=25 | | 13=4x+3 | | -3x-3=7-2x | | 72-21=42 | | x^2+17x+c=-14 |

Equations solver categories