Question

x/3+y/5=1 2(x-1)=3(9+3)

Answer 1

x/3+y/5=1
5*x+3*y=15
5x+3*y=15
5x+3*y=15
5x+3y=15

2*(x-1)=3(9+3)
2*(x-1)=3*12
2*(x-1)=36
2*x-2*1=36
2x-2=36
2x=36+2
2x=38
x=38/2
x=19