Question

-3(r-7)-4(-7r-8)=28 Solve for R

Answer 1

Explanation:

-3(r - 7) - 4(-7r - 8) = 28

-3*r - (-3)*7 -4*(-7r) - (-4)*8 = 28

-3r + 21 + 28r + 32 = 28 {bring like terms together}

-3r + 28r + 21 + 32 = 28

25r + 53 = 28

25r = 28 - 53

25r = - 15

r = -15/25

r =-3/5