Answer:
40y+20=60y-40
60y-40y=20+40
20y=60
y=60÷20
y=3
8x=2x+30
8x-2x=40
6x=30
x=30÷6
x=5
(40×3+20) = 140
8×5 = 40
(2×5+30)=40
(60×3-40)=140
y = 3
x = 5
Explanation:
40y + 20 = 60 y - 40 because opposite angles are equal
solve this equation
40y + 60 = 60 y
60 = 20 y
3 = y
8x = 2x +30
6x = 30
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