3(u+3)-8u=-21

Simple and best practice solution for 3(u+3)-8u=-21 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 3(u+3)-8u=-21 equation:


Simplifying
3(u + 3) + -8u = -21

Reorder the terms:
3(3 + u) + -8u = -21
(3 * 3 + u * 3) + -8u = -21
(9 + 3u) + -8u = -21

Combine like terms: 3u + -8u = -5u
9 + -5u = -21

Solving
9 + -5u = -21

Solving for variable 'u'.

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

Add '-9' to each side of the equation.
9 + -9 + -5u = -21 + -9

Combine like terms: 9 + -9 = 0
0 + -5u = -21 + -9
-5u = -21 + -9

Combine like terms: -21 + -9 = -30
-5u = -30

Divide each side by '-5'.
u = 6

Simplifying
u = 6

See similar equations:

| -5x+8x+26=5(3x-2) | | 0.7y=0.3y+3 | | -6x+8+3x=23 | | 4x+42=9x+7 | | 7m+2n-3+8n-5m+6= | | 16c-8=20c+6 | | -5=-13+x | | P=-1d+5t | | -2.7+x=-5.3 | | 2f+4= | | 45u+54= | | 3x+1y=300 | | x-12=3x+3 | | 0.4x-0.5(2x+3)=0.7(x+7) | | x-7/10*5=-2 | | 4.3p-8.4=1.2p | | 16v=42+9v | | 15=3/4u | | log(2)(x+2)+log(2)(x-2)=5 | | 9(x+2)+2=-25 | | 12d+8=15d-11 | | -21=y-5 | | 5x+24=8x-6 | | Q/2-8=5 | | 3x=y | | 223=3-w | | 9(x+2)+2= | | 4x+y=70 | | n(n-1)(n-2)=8*6*70 | | 8x+1.8=3x+0.2 | | 14z^5-42z^4+6z^3= | | -5x-7=2x-1-9x |

Equations solver categories