Question

-13 = r/9 + 8

solve for r.

Answer 1

R= -189. First, you subtract 8 from both sides, which gives you -21= r/9. Then, you multiply 9 on both sides, isolating r. 9 × -21 is -189. How it is correct; -189/9 is -21. -21 + 8 = 13 :)