-3m+9=21

Simple and best practice solution for -3m+9=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 -3m+9=21 equation: 


Simplifying
-3m + 9 = 21

Reorder the terms:
9 + -3m = 21

Solving
9 + -3m = 21

Solving for variable 'm'.

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

Add '-9' to each side of the equation.
9 + -9 + -3m = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -3m = 21 + -9
-3m = 21 + -9

Combine like terms: 21 + -9 = 12
-3m = 12

Divide each side by '-3'.
m = -4

Simplifying
m = -4

See similar equations:

| 2+5x=7(4-y) | | 2x+15=2x-1 | | 6x(550-x)+4.50*x=3700 | | 8x-17=30 | | 4x-(100-x)=225 | | 5(3x+3)+5(6x+5)+6=45x+46 | | -6x+-11=49 | | -(2x+8)-x= | | 3x(2x-7)x=5 | | -3(-8-2i)= | | 4x+3=2x+31 | | 14(5/14x-7)=14(x/7+5) | | 5x-5x=9 | | 4(5y+1)+13=5(6y+5)+20 | | 16.1+d=22 | | .5x+.3y=6 | | 4x-x=225 | | 2(2-x)=14-8(2x+5) | | p-18=-13 | | 2800+0.02x/4000+x= | | -5y-7(3y-5)=6+2(-6-y) | | 30+4y-9=13y-14-2y | | (3x+8)(x)=100 | | x^2y^2-121= | | 9(x+9)+2=-4(x-9)-5 | | 4y(y-3)=6-2y | | 12=-3x+27 | | 9+4x=2(3-y) | | Xy+2y+3x+6= | | x+83=120 | | 6n+-4+2n-1= | | -3g-2-(4g+10)g=6 |

Equations solver categories