Question

- 7 1/2-(x+ 3 2/7)=10 5/14
10баллов

Answer 1

-7 1/2 - (х + 3 2/7) = 10 5/14
-7 1/2 - 10 5/14 = х + 3 2/7
-17 12/14 = х + 3 2/7
х = -17 12/14 - 3 2/7
х = -20 16/14 = - 21 2/14 = -21 1/7

Answer 2

спасибо)