Question

Решиье помогите 1) 17х-2,6=3(0,8+3х) 2) 8+5,1х=49(1+0,1х) 3)38(0,1х+1)=40-3,2х.

Answer 1

1) 17х-2,6=3(0,8+3х); 17х-2,6=2,4+9х; 17х-9х=2,4+2,6; 8х=5; х=5/8; /// 2) 8+5,1х=49(1+0,1х) ; 8+5,1х=49+4,9х; 5,1х-4,9х=49-8; 0,2х=41; х=41:0,2; х=205; /// 3)38(0,1х+1)=40-3,2х; 3,8х+38=40-3,2х; 3,8х+3,2х=40-38; х=2/7