18*y-5*y+2*y=4517*x-12x+6*x=55

Question

18*y-5*y+2*y=45
17*x-12x+6*x=55

Answer 1

18y-5y+2y=45
15y=45
y=3

17x-12x+6x=55
11x=55
x=5

Answer 2

1) 3 (15у=45;45:15)

2)5(11х=55; 55:11)