3((z+1))=21

Simple and best practice solution for 3((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 3((z+1))=21 equation: 


Simplifying
3(z + 1) = 21

Reorder the terms:
3(1 + z) = 21
(1 * 3 + z * 3) = 21
(3 + 3z) = 21

Solving
3 + 3z = 21

Solving for variable 'z'.

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

Add '-3' to each side of the equation.
3 + -3 + 3z = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 3z = 21 + -3
3z = 21 + -3

Combine like terms: 21 + -3 = 18
3z = 18

Divide each side by '3'.
z = 6

Simplifying
z = 6

See similar equations:

| 300x+40=140 | | 6(7c+8)-5c= | | -3x+8+9x=5+2x+3 | | 7r+5=1+8r | | 65=4(2n+5)+5 | | -12n+14=-10n-10 | | c=4(1000)+3200 | | 12y+12y=9y | | -3(c+7)= | | 3x-18=150 | | 1783=t-(-836) | | 4+17u=-157 | | x=350 | | 8y-14y=-16-20 | | 4-2p=3p-11 | | 9e+3e=48 | | -3b-8-4=23 | | 14q+14=12 | | -3(x+1)+15=-12 | | 7n+3(10+5n)=74 | | 4m^2-6m^3+2m^2=0 | | (x-2700)+x+(22x)=117300 | | 12-2n=8*4+n | | -4x+7x-12=3 | | 9+p=75 | | 38=(4x+-19)-3 | | 2.75x=13.75 | | 3x+74-18x-130=0 | | -4(c+1)=32 | | 2.4+49=-1.2x | | A=2BC+2BD | | A=2BC+2BDforb |

Equations solver categories