Question

If m ∠ ∠ ∠ ∠ 3 = 7x + 40 and m ∠ ∠ ∠ ∠ 4 = 2x + 23, find m ∠

Answer 1

M=3+7x+40=4+2x+23

M=3+7x+40-4-2x-23

M=5x+20

M=5x=20

M=5x:5=20:5

M=4