3(d+8)=21

Simple and best practice solution for 3(d+8)=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(d+8)=21 equation: 


Simplifying
3(d + 8) = 21

Reorder the terms:
3(8 + d) = 21
(8 * 3 + d * 3) = 21
(24 + 3d) = 21

Solving
24 + 3d = 21

Solving for variable 'd'.

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

Add '-24' to each side of the equation.
24 + -24 + 3d = 21 + -24

Combine like terms: 24 + -24 = 0
0 + 3d = 21 + -24
3d = 21 + -24

Combine like terms: 21 + -24 = -3
3d = -3

Divide each side by '3'.
d = -1

Simplifying
d = -1

See similar equations:

| 5.55567973144b+2000=7b+500000000 | | -9x-1=19 | | 8ax-y=3y+ax | | 4x^2-2y^2-9=o | | 2x-2/3x | | 7x+3-2x+5=0 | | -2(-2v^3-3+3u^2)= | | 3x^3-12x^2+8=0 | | -2(-2v^3-3+3v^2)= | | y=19x+5 | | 4(c-6)=7c | | 6+7c-5-8= | | 1.5x(-2)= | | -6(2k+8)-(3-8k)=-27 | | 2/3(x-18)=17 | | 2/5x1 | | -64x-6/50 | | 5y-8=9+4(y-5) | | 4c/3-2=8 | | 3(2d-1)+5=4(d+1) | | y=-3/2x-9 | | -3/4*-6 | | 2(6x-3)=-(6-12x) | | Sqrt(2y+13)=sqrt(5y+7) | | p^2=15-2p | | -2(w+11)=6 | | 2/3(9-2x)=-30 | | 13p^2+52=0 | | 12×1/2 | | X-6x+30=2x+4x-60 | | 6x+4-2x+1=15 | | 3x-6+4x-8=50 |

Equations solver categories