Question

a) 5/7 * x + 6/7 * x + 27 = 77 ;
B) (4y - 3/7 * y) * 35 - 383 = 617 .
б) 4/5 * a - 3/10 * a - 12 = 71 ;​

Answer 1

Ответ:

А)

5/7x+6/7x+27=77

5/7x+6/7x=77-27

11\7х=50

х=50:11\7

х=50*7\11

х=350\11=31 9\11

В)

(4y-3/7y)*35-383=617

4*35y-3*35/7y=617+383

140y-15y=1000

125y=1000

y=8

Б)А=166