3*(x+y+1)-2*(x-5-y)=24
3x+3Y+3-2x+10+2y=24
x+5y=24-3
x+5y=21
x=21-5y
5*(-2x-3y+4)+4*(1+3x+2y)=12
-10x-15y+20+4+12x+8y=12
2x-7y+24=12
2x-7y=12-24
2x-7y= -12
2*(21-5y)-7y= -12
42-10y-7y= -12
42-17y= -12
42+12= 17y
17y= 54
y=54:17
y=3,1
x=21-5y=21-5*3,1=21-15,5
x=5,5
