Question

Angles Q & R are supplementary. If angle Q=4x+9 & R=8x+3, what is the measure of each angle?

Answer 1

4x+9+8x+3=180
12x+12=180
12x=180-12
12x=168
x=168/12
x=14

1. Q= 4x+9
          4(14) +9
         56+9
    Q= 65
2. R= 8x+3
         8(14) +3
       112+3
    R= 115