7z-21=42

Simple and best practice solution for 7z-21=42 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 7z-21=42 equation: 


Simplifying
7z + -21 = 42

Reorder the terms:
-21 + 7z = 42

Solving
-21 + 7z = 42

Solving for variable 'z'.

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

Add '21' to each side of the equation.
-21 + 21 + 7z = 42 + 21

Combine like terms: -21 + 21 = 0
0 + 7z = 42 + 21
7z = 42 + 21

Combine like terms: 42 + 21 = 63
7z = 63

Divide each side by '7'.
z = 9

Simplifying
z = 9

See similar equations:

| y+3y=1 | | .05x+10=2x-5 | | 6x=-5y+15 | | 14x=3x+33 | | 3(x-5)+x=3+x | | 0=-45+15y-18x | | 7+6(a+5)=-3+4(4a-5) | | 8n+3-5=4n-5 | | 5(2n+4)=25 | | 20x+5=24 | | 2(n+7)=6 | | -2y=-4x | | 3(n+5)=9 | | 7(x-4)=3(x+20) | | 7n+25=4 | | 2,0655744826=2,8/× | | -1.2X=3.6 | | 3(3x+14)=2(x+21) | | -4(1-3k)=-88 | | Ng=x+3 | | Nh=2x-3 | | 1/5w=32 | | 4(x-15)=x-6 | | 1.2=w/8000 | | 2xsquared/4x | | 4-6x=3-5x | | -8x+-36=-52 | | x+(11x+24)=180 | | 3x+4=-x-24 | | 3x+44=11fory | | 10x-70=-111 | | y=6-2(1)/-3 |

Equations solver categories