(3x+9)+(5x)=81

Simple and best practice solution for (3x+9)+(5x)=81 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)+(5x)=81 equation:


Simplifying
(3x + 9) + (5x) = 81

Reorder the terms:
(9 + 3x) + (5x) = 81

Remove parenthesis around (9 + 3x)
9 + 3x + (5x) = 81

Combine like terms: 3x + (5x) = 8x
9 + 8x = 81

Solving
9 + 8x = 81

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 8x = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 8x = 81 + -9
8x = 81 + -9

Combine like terms: 81 + -9 = 72
8x = 72

Divide each side by '8'.
x = 9

Simplifying
x = 9

See similar equations:

| -7+5x=13 | | x(x-16)+63=0 | | (w-2)=(-4+7w) | | 5x^2+10x-315=0 | | 63x^2-16x-64=0 | | -8x+4(x-6)=-28 | | 4(-x+8)=44 | | 6(4x-7y)-(x+2y)= | | 4x^3+27x^2-48=0 | | -3v+3.5=-2.3v-1.6 | | x+3.8=2.3 | | 16X^2-17X+4=0 | | -9+4k=7 | | -1=4x+22 | | 3x/6-x=x/30-8/5 | | 3(x+1)-2x=x+8 | | 23x-42y=0 | | 12x^2-4x+6= | | 3(2x-6)=6x-18 | | 3x-5=1x-7 | | 8(x+2)-3(2x+4)=2(x+5) | | -5y+33=-7(y-5) | | 3(2n-5)-7=4(n-9) | | 3(u-6)-7u=22 | | 11700=(150v-1200)+(1440v+180) | | 0.20x+0.15(70)=22.5 | | 6x^2+60x+54=0 | | 11700=1590v-1020 | | -2=n-5 | | 5y^2+11y+6=0 | | y=-4(2)+9 | | -1=3(3+5r)+7r |

Equations solver categories