Answer:
w = 5
y = 4
Explanation:
w + y = 9
3w - y = 11 ( + )
________
4w + 0 = 20
4w = 20
w = 20 / 4
Substitute w = 5 in eq. w + y = 9,
5 + y = 9
y = 9 - 5
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