x =7/8
Пошаговое объяснение:
9х - 3 1/2=4 3/8
72x - 4 ⋅ (3 ⋅ 2 + 1) = 4 ⋅ 8 + 3
72x - 4 ⋅ (6 + 1) = 4 ⋅ 8 + 3
72x - 28 = 32 + 3
72x = 35 + 28
72x = 63
x = 63/72
x = 7/8
