Answer: Cách 1: 5(x-5) - 3(5-x) =0
=> 5x-25-15+3x=0
=> 8x - 40 = 0
=> 8x = 40
=> x = 5
Cách 2: 5(x-5) - 3(5-x) = 0
=> 5(x-5) + 3(x-5) = 0
=> 8(x-5) = 0
=> x - 5 = 0
Explanation:
9.5m questions
12.2m answers