Question

X+x+(x-45)+(x-45)+(x-45)=540 and they're all degrees

Answer 1

x + x + (x-45) + (x-45) + (x-45) = 540

x + x + x + x + x - 45 - 45 - 45 = 540

5x - 135 = 540

5x = 540 + 135

5x = 675

x = 675/5

x = 135

x = 135°