1) 10 * (x - 7) - 8 (x + 5) = 6 * (-5) + 24
10x - 70 - 8x - 40 = -6
10x - 70 - 8x - 40 + 6 = 0
2x - 104 = 0
2x = 104
x = 52
2) 8 * [x - |-7|] - 6 * (x - 2) = |8| * 6 - 50
8 * [x - |-7|] - 6 * (x - 2) = 2 * (x - 22)
2 (x - 22) = -2
2x - 44 = -2
2x = 42
x = 21
3) 2 * (4 * x - 8) - 7 (3 + x) = |-4| (3 - 2)
2 * (4 * x - 8) - 7 (3 + x) = x - 37
x - 37 = 2^2
x - 37 = 4
x = 41
Chúc bạn học tốt !!!