(3x-9)+(x+7)=90

Simple and best practice solution for (3x-9)+(x+7)=90 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)+(x+7)=90 equation:


Simplifying
(3x + -9) + (x + 7) = 90

Reorder the terms:
(-9 + 3x) + (x + 7) = 90

Remove parenthesis around (-9 + 3x)
-9 + 3x + (x + 7) = 90

Reorder the terms:
-9 + 3x + (7 + x) = 90

Remove parenthesis around (7 + x)
-9 + 3x + 7 + x = 90

Reorder the terms:
-9 + 7 + 3x + x = 90

Combine like terms: -9 + 7 = -2
-2 + 3x + x = 90

Combine like terms: 3x + x = 4x
-2 + 4x = 90

Solving
-2 + 4x = 90

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 4x = 90 + 2

Combine like terms: -2 + 2 = 0
0 + 4x = 90 + 2
4x = 90 + 2

Combine like terms: 90 + 2 = 92
4x = 92

Divide each side by '4'.
x = 23

Simplifying
x = 23

See similar equations:

| -y+16+6y=44 | | z+10=z-5 | | 2y^2=-16y | | (2x+6)(3x+10)=0 | | -2x-8=4x+16 | | 3z^2-7z+4=0 | | 5(-1)-2= | | 176-6x=39x-21 | | 0.45(5-0.4n)=-3.2 | | 5x-2=-2x-9 | | 3-18+8x=67 | | 2(-3+4y)=-6 | | 6m/5=24 | | -8*x+3=251 | | 15y^2+46y+16=0 | | 17p-3=48 | | 4x+2=2x+24 | | x^4+3x^2-54=0 | | 4w^2=-28w | | =3ln(8) | | 7t-8=4t-2 | | 3x-8=10-3x | | 5n(2n+8)=0 | | -5x+4=-40+6x | | (2x^3)x(8x^8)= | | 9x^2+2x=10x | | 6s-10=-3x+8 | | -15=-30 | | 7(6-7x)=-56 | | ax^2+8x-3=4 | | -7(10+4x)=-238 | | 5x^2-15=45 |

Equations solver categories