Question

решите уравнение 2/3(4,2-9,6х)=2,8(2/7-1/2х)
+10 балов

Answer 1

2/3(4,2-9,6х)=2,8(2/7-1/2х)
2/3*4,2-2/3*9,6х=2,8*2/7-2,8*1/2х
2.7-6.4х=0.8-1.4х
2.7-0.8=6.4х-1.4х
1.9=5х
х=1.9/5
х=0.38
ответ:х=0.38