7u-21=-7(u+7)

Simple and best practice solution for 7u-21=-7(u+7) 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 7u-21=-7(u+7) equation:


Simplifying
7u + -21 = -7(u + 7)

Reorder the terms:
-21 + 7u = -7(u + 7)

Reorder the terms:
-21 + 7u = -7(7 + u)
-21 + 7u = (7 * -7 + u * -7)
-21 + 7u = (-49 + -7u)

Solving
-21 + 7u = -49 + -7u

Solving for variable 'u'.

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

Add '7u' to each side of the equation.
-21 + 7u + 7u = -49 + -7u + 7u

Combine like terms: 7u + 7u = 14u
-21 + 14u = -49 + -7u + 7u

Combine like terms: -7u + 7u = 0
-21 + 14u = -49 + 0
-21 + 14u = -49

Add '21' to each side of the equation.
-21 + 21 + 14u = -49 + 21

Combine like terms: -21 + 21 = 0
0 + 14u = -49 + 21
14u = -49 + 21

Combine like terms: -49 + 21 = -28
14u = -28

Divide each side by '14'.
u = -2

Simplifying
u = -2

See similar equations:

| 10-3b+3=1+(1b+2) | | n+3+5=20 | | 5x^12=400 | | 3x+1-2x-1=9 | | x^4-6*x^2-27=0 | | W^2-3=480 | | 28-6(2x-1)+5=14 | | x^5-7x^3-8x=0 | | 2x+17=4y | | 4(x+8)+9x=-7 | | -1(1-1x)=4 | | 4a-2b+3a= | | x^4+2x^3-3x^2-6x=0 | | x^5-9*x^3=0 | | 3x-129+7x=101 | | 3x-7=63-11x | | 3(v-9)-9=-5(-4V+8)-9V | | 8x=2x+3 | | 2x+100x=300000 | | c(x)=(9x-4)(6x-3) | | 5x=15-8 | | -8(17-4x)=30 | | (k-4)(k+2)=0 | | 2(a-2)+7a-3(1+a)=0 | | x^3+3x^2-x-318=0 | | 22-55+85+65=5 | | 248.4-(6*24.84)=x | | 4x*3x=116 | | -38=-8y+6(y-5) | | 11x-14=3x+18 | | 2x+65=55 | | 5(x-1)+20=4(x-3) |

Equations solver categories