Question

7 1/8 - (x + 2 3/5) = 2 21/40

Answer 1

Ответ:

7 1/8 - (х + 2 3/5) = 2 21/40

7 1/8 - х - 2 3/5 = 2 21/40

7 1/8 - х = 2 3/5 + 2 21/40

7 1/8 - х = 4 45/40

х = 7 1/8 - 5 5/40

х = 2