Question

Решите уравнение: 1) 10-3(5х-1.5)=2,5-5х

2) 2(3х-4)=5х-3(х+1)

 

Answer 1

1) 10-3(5х-1.5)=2,5-5х

10-15х+4,5=2,5-5х

-15х+5х=2,5-4,5-10

-10х=-12

х=12/10=1,2

 

2) 2(3х-4)=5х-3(х+1)

6х-8=5х-3х-3

6х-5х+3х=-3+8

4х=5

х=5/4=1 целая 1/4