Question

Solve 4(r+1.9)-9r=12.2 r= type integer or decimal rounded to the nearest hundredth as needed

Answer 1

4(r+1.9)-9r=12.2
4r + 7.6 -9r = 12.2
-5r = 12.2 - 7.6
-5r = 4.6
r = 4.6/-5
r = - 0.92