3(r-7)=-12

Simple and best practice solution for 3(r-7)=-12 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(r-7)=-12 equation:


3(r-7)=-12

We simplify the equation to the form, which is simple to understand 
3(r-7)=-12

Reorder the terms in parentheses
+(+3r-21)=-12

Remove unnecessary parentheses
+3r-21=-12

We move all terms containing r to the left and all other terms to the right. 
+3r=-12+21

We simplify left and right side of the equation. 
+3r=+9

We divide both sides of the equation by 3 to get r. 
r=3

See similar equations:

| 28x=-42 | | -35=5(x-7) | | 4y+2=2 | | 6=-1-4x-3x | | (-d/6)+12=-7 | | 3x-c=0 | | 13-2(x+7)=5 | | y=0.5x^2-2 | | 45+24y-32=7y+49-8+3y | | y2=4/81 | | 1/4x+2/3=5/6 | | 2n-4n=-6 | | 2(x-2)-5x=-3(x-3) | | 4/x+7=22/7x+6 | | 45y+24y-32=7y+49-8+3y | | (4/x)+7=(22/7x)+6 | | -18=-8n-n | | -17=1-5x+8x | | -7-5x=-3 | | X^2-28+10x=0 | | 0.05x=240 | | 7+x-1-15=6 | | 5b-7=3 | | 0.5x=240 | | 49t^2= | | 3x-8+7x+9= | | -3x^2+18x+21= | | (X-7)(2x+2)=-4(x-7) | | .3x-2.3=.4 | | 1/2x+6=4 | | 2(2x+3)=9x+12-x | | 2d+4=2 |

Equations solver categories