4(z-1)=21

Simple and best practice solution for 4(z-1)=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 4(z-1)=21 equation: 


Simplifying
4(z + -1) = 21

Reorder the terms:
4(-1 + z) = 21
(-1 * 4 + z * 4) = 21
(-4 + 4z) = 21

Solving
-4 + 4z = 21

Solving for variable 'z'.

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

Add '4' to each side of the equation.
-4 + 4 + 4z = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 4z = 21 + 4
4z = 21 + 4

Combine like terms: 21 + 4 = 25
4z = 25

Divide each side by '4'.
z = 6.25

Simplifying
z = 6.25

See similar equations:

| -(k+12)=6+(-12) | | .8(73)+2x=73 | | 6x+5y=-13 | | 5x-3x=4x+20 | | -4/9w=-11/12 | | (4x+24)/16 | | 32+90+8x+34=180 | | 10+3x=70 | | (1/5)(2x+2)=8 | | 14(2c-9)=6c-4 | | 4x+24/16 | | -8/-4i | | 5y/2=50 | | x+4=6.4 | | 2/3m+4=-7 | | (2)2x-3=10 | | 7+5x-14x= | | 3/7x=6 | | 90+-0.5z=180 | | 9/(x-1)=3+11/(x-1) | | 3y+4x=6 | | 2x-3(2)=10 | | 7+2/5y=3/5y-4 | | 2y+z=180 | | 5x+39=13x-114 | | 5u=15/7 | | 2y-z=180 | | 14n+4-13n-9=7 | | 5x+6y=23 | | -6x-2/5 | | H=180-5T^2 | | -2y+2y= |

Equations solver categories