Assuming the "+h" is a typo,
2x+3y = 42
18x+3y = 90
now subtract to get
16x = 48
x = 3
so y = 12
solve for x and y using elimination
show All steps
2x+3y=42+h
6x+y=30
1 answer
show All steps
2x+3y=42+h
6x+y=30
1 answer