Question

Решите уравнение 9/15(x-3/7)=23/28

Answer 1

9/15(Х -3/7)=23/28
9/15Х -27/105=23/28
9/15Х=23/28 +27/105
9/15Х=(345+108)/105
Х=15(345+108)/105*9=453/7*9=453/63=7 12/63=7 4/21