Question

5*х+3х=60 5*(х+3)=60
3*х+15=60
8*х=60 3*(х+5)=60
5*х+5*3=60
15+5*х=60 (5+3)*х=60
и

Answer 1

3*х+15=60
3*х=60-15
3*х=45
х=45/3
х=15