3x+9=31-7x

Simple and best practice solution for 3x+9=31-7x 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=31-7x equation:


Simplifying
3x + 9 = 31 + -7x

Reorder the terms:
9 + 3x = 31 + -7x

Solving
9 + 3x = 31 + -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 = 31 + -7x + 7x

Combine like terms: 3x + 7x = 10x
9 + 10x = 31 + -7x + 7x

Combine like terms: -7x + 7x = 0
9 + 10x = 31 + 0
9 + 10x = 31

Add '-9' to each side of the equation.
9 + -9 + 10x = 31 + -9

Combine like terms: 9 + -9 = 0
0 + 10x = 31 + -9
10x = 31 + -9

Combine like terms: 31 + -9 = 22
10x = 22

Divide each side by '10'.
x = 2.2

Simplifying
x = 2.2

See similar equations:

| 46-3x=-7x | | 4x+2(3x+2)=5+x | | -10(-1/7) | | x=antilog(27)*8/3 | | 9(-1)=10-k | | -3/7(1) | | -1/7(-3/1) | | (X+3)(x-2)=x(x-7) | | 6(-0/9) | | -0/9(6) | | 12.8-7w=1.6 | | 3v+36=20v+36 | | Log(5x+2)=4 | | x=cos^4(0) | | 7x+16=4-x | | 8y-20=5y+1 | | -1/7(-3) | | 2x-7=2y | | -1/7(-10) | | 7x+8y+9z=1300000000 | | 5sinx-cosx=0 | | 7x+8x+9x=1300000000 | | 1-2/-3-10 | | 7v^2+32v-15=0 | | 2/3(2x | | -5/3(1/2) | | -49v^2-140v-84=0 | | -5/3x1/2 | | 2x^2+5x-64=0 | | -5x^2-38x-48=0 | | 8+5-7*9= | | 1/2x41/2x31/2 |

Equations solver categories