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Elis [28]
3 years ago
13

Solve the system by substitution or elimination

Mathematics
1 answer:
OleMash [197]3 years ago
4 0
X - y = 5,
x = 5 + y
substitute (x = 5 + y) into the first equation,
5 + y + 2y = -1
3y = -6
y = -2,
substitute y = -2 into (x - y = 5),
x + 2 = 5
x = 3

Hence, x = 3, y = -2
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