Решите уравнение 1) (2х+3)-(х-(3х+4))=5. 2) (2х-3)-(х-(3х-4))=6...

Question

Решите уравнение 1) (2х+3)-(х-(3х+4))=5.
2) (2х-3)-(х-(3х-4))=6
3)10,4у-((4у+5)-(7-6y))=155
4)(6х+2)-(5х-4)=6

Answer 1

2) (2х-3)-(х-(3х-4))=6
2x-3-4-x+3x-6=0
4x-13=0
4x=13
x=13/14
3) 10,4у-((4у+5)-(7-6y))=155
10.4y-4y-5+7-6y-155=0
10.4y-4y-153-6y=0
0.4y-153=0
y=153/0.4
4)(6х+2)-(5х-4)=6
6x+2+4-5x-6=0
6x-5x=0
1x=0
x=0