-20=4(m-8)+2(1-7m)

Solution for -20=4(m-8)+2(1-7m) equation:

-20=4(m-8)+2(1-7m)

We move all terms to the left:

-20-(4(m-8)+2(1-7m))=0

We add all the numbers together, and all the variables

-(4(m-8)+2(-7m+1))-20=0


We calculate terms in parentheses: -(4(m-8)+2(-7m+1)), so:

4(m-8)+2(-7m+1)

We multiply parentheses

4m-14m-32+2

We add all the numbers together, and all the variables

-10m-30

Back to the equation:

-(-10m-30)


We get rid of parentheses

10m+30-20=0

We add all the numbers together, and all the variables

10m+10=0

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

10m=-10

m=-10/10

m=-1