1/2r - 3 = 3(4-3/2) -----> Simplify the right side. 1/2r - 3 = 3(1/2) -----> Multiply 1/2r - 3 = 3/2 ----> Add 3 to both sides 1/2r = 6/2 + 3/2 1/2r = 9/2 -----> Divide both sides by 1/2 which is the same as multiplying my 2 r = 18/2 r = 9 Hope this helps!
