Answer:
x = 5 and y = 15
Explanation:
3x + 2y = 45 (call this equation '1')
4x - y = 5 (call this equation '2')
multiply '2' by two
8x - 2y = 10 (call this equation '3')
add '1' and '3'
(3+8)x + (-2 + 2)y = (45 + 10)
11x = 55
x = 5.
now substitute this value into '1'
3x + 2y = 45
3(5) + 2y = 45
15 + 2y = 45
2y = 45 - 15 = 30
y = 15
now substitute x = 5 and y =15 into '2' to check if they're correct
4x - y = 5
4(5) - 15 = 5
20 - 15 = 5.
So, x = 5 and y = 15