Решите уравнение

a) (x - 3/8) * 8/35 + 2 2/7 = 2 2/5

б) 5 5/7 + (x - 2 3/7) = 8 2/7

в) 6 1/5 - (2 3/5 + x) = 3 2/5

A) (x - 3/8) * 8/35 + 2 2/7 = 2 2/5

(x - 3/8) * 8/35 + 16/7 = 12/5 умножим на 35

(x - 3/8) * 8 + 16*5 = 12*7

8 х-3+80=84

8 х=84-80+1

8 х=5

х=5/8=0,625

б) 5 5/7 + (x - 2 3/7) = 8 2/7

5 5 / 7 + x - 2 3/7 = 8 2/7

х+3 2/7=8 2/7

х=8 2/7-3 2/7=6

в) 6 1/5 - (2 3/5 + x) = 3 2/5

6 1/5 - 2 3/5 - x = 3 2/5

6 1/5 - 2 3/5 - x = 3 2/5

4 1/5 - 3/5-х = 3 2/5

4 - 2/5-х = 3 2/5

3 3/5-х = 3 2/5

х=3 3/5 - 3 2/5=1/5=0,2