Answer:
x = 40
Step-by-step explanation:
15 15 • 8
15 = —— = ——————
1 8
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
3x - (15 • 8) 3x - 120
————————————— = ————————
8 8
Pulling out like terms :
3x - 120 = 3 • (x - 40)
3 • (x - 40)
———————————— = 0
8
3•(x-40)
———————— • 8 = 0 • 8
8
3 • (x-40) = 0
3 = 0
x = 40
