7(z-12)=21

Simple and best practice solution for 7(z-12)=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 7(z-12)=21 equation: 


Simplifying
7(z + -12) = 21

Reorder the terms:
7(-12 + z) = 21
(-12 * 7 + z * 7) = 21
(-84 + 7z) = 21

Solving
-84 + 7z = 21

Solving for variable 'z'.

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

Add '84' to each side of the equation.
-84 + 84 + 7z = 21 + 84

Combine like terms: -84 + 84 = 0
0 + 7z = 21 + 84
7z = 21 + 84

Combine like terms: 21 + 84 = 105
7z = 105

Divide each side by '7'.
z = 15

Simplifying
z = 15

See similar equations:

| 5/(-5) | | 25=2c+9 | | 7x+z=0 | | 91=2y+y | | -49+-49p-8=280 | | -6v-8=-8+6v | | 0.9x-1.1=5 | | 13+a=6+48a-40 | | 4=14-t | | 5(x+9)=-75 | | y=120x+500 | | 8z-8-11z=3z-6 | | 2(x+3)=2(x+13) | | 3=7-2s | | qd=20-2p | | x/3-7=5/6 | | 1+2+3x-5x+10x=0 | | -48+-48p-8=280 | | 29=6d+11 | | X=e^9.8/e^7.6 | | 2.5x+0.5(x-1)=12.5 | | 0.25x+9=4 | | 24-(4x+2)=30 | | z-30=-28 | | 25+5x=100 | | 10=-5t^2+20 | | 15=-5t^2+20 | | 6x+12=6x-20 | | 3y-1x= | | 120/232 | | 3x-6+1=3x-8+13 | | 18+12z=9(z+18) |

Equations solver categories