28=7(12-r)

Simple and best practice solution for 28=7(12-r) 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 28=7(12-r) equation: 



28=7(12-r)

We move all terms to the left:

28-(7(12-r))=0

We add all the numbers together, and all the variables

-(7(-1r+12))+28=0



We calculate terms in parentheses: -(7(-1r+12)), so:

7(-1r+12)

We multiply parentheses

-7r+84

Back to the equation:

-(-7r+84)



We get rid of parentheses

7r-84+28=0

We add all the numbers together, and all the variables

7r-56=0

We move all terms containing r to the left, all other terms to the right

7r=56

r=56/7

r=8

See similar equations:

| 32+2x=5x+5 | | 2=3(x-5)-4 | | 4(2x+5)+10=14 | | 4x-4=2(4x+4) | | 21(2x-8)=14(4x-8) | | 3(2x-2)+3=-27 | | 2x3-x=42 | | 2(2x+5)+9=3 | | 4(5x-2)-5=27 | | 15x-4=9×+8 | | x-20=2(4x-1)-4 | | 12=2(4x+2) | | -6=2(2x+5) | | x2+14x-60=-9 | | -4x+28=2(2x-2) | | -X-31X+85+21X-21-3x=136-42 | | 5(x+2)-3=-x+37 | | −x=5x= | | 4x-1=-2x-25 | | x−0,5=0 | | 2(4x+4)+5=-27 | | 2x-33=-6x-57 | | -16=4(5x+1) | | -x+29=3(2x-4)+6 | | 4x+10=2(3x+1) | | 5x=10x-3x | | 2x+13=2(2x+4)-5 | | 2x+10=2(2x-3) | | -x-13=2(5x-1) | | 9,1a+3.6=6.5a-30.2 | | 3(5x-5)+1=x-42 | | 3(4x+3)=-x+48 |

Equations solver categories