3(-5+a)=-21

Simple and best practice solution for 3(-5+a)=-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(-5+a)=-21 equation: 


Simplifying
3(-5 + a) = -21
(-5 * 3 + a * 3) = -21
(-15 + 3a) = -21

Solving
-15 + 3a = -21

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + 3a = -21 + 15

Combine like terms: -15 + 15 = 0
0 + 3a = -21 + 15
3a = -21 + 15

Combine like terms: -21 + 15 = -6
3a = -6

Divide each side by '3'.
a = -2

Simplifying
a = -2

See similar equations:

| 12a+14ab=2a(6a+7b) | | 16x-10=y | | r+(-8)=15 | | -18x-3(-6x+18)=-54 | | n/2-4=-7 | | 8x-y=-55 | | -10m-10=9 | | -18x-3y=-54 | | -192/-24= | | 2=p/12 | | 21x-3y=-8 | | x-x-17=1 | | y-9=1/3x-2 | | -42-3y=-8 | | 2y^2+8y+16=80 | | -8=k-6 | | xy^2=xy+y^2 | | 6x-x+12=0 | | xty=z | | 18/(-6)= | | 8x-4=3x-14 | | 16+5x=11x+10 | | 8x-25=30 | | 5x+14-2=3x-16 | | 9-2z=4z-21 | | X^2-8X-114=0 | | -11=2v+3 | | 5x+65=2x+21 | | 4x+7=3x+30 | | 3(x-18)+11=8 | | 4x+7x=3x+30 | | 33-y=11+y |

Equations solver categories