Question

9(x-1)=x+15
(11x+14)-(5x-8)=25

Answer 1

9(х-1)=х+15
9х-9=х+15
9х-х=15+9
8х=24
х=24:8
х=3

(11х+14)-(5х-8)=25
11х+14-5х+8=25
11х-5х+14+8=25
6х+22=25
6х=25-22
6х=3
х=3:6
х=0.5