Answer:
There is a mistake please send again. There is a sign between the 40 and 8. What sign is it?
Explanation:
8x-80=4×
x = 30
8(x-10)=4x+40
8*x + 8*-10 = 4x + 40
8x - 80 = 4x + 40
8x - 4x = 40 + 80
4x = 120
x = 120/4
Probe:
8(30-10) = 4*30 + 40
8*20 = 120 + 40 = 160
