Question

1/5х=13;3у-11,4=0;4х-2,5=х+5;16-2(4х-1)=2х

Answer 1

1/5х=13
х=5*13=65

3у-11,4=0
3у=11,4
у=11,4/3=3,8

4х-2,5=х+5
4х-х=5+2,5
3х=7,5
х=7,5/3=2,5

16-2(4х-1)=2х
2(4х-1)+2х=16
8х-2+2х=16
10х=18
х=18/10=9/5