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kakasveta [241]
3 years ago
5

Find the solution x = 3 + y 21x + 8y = -24

Mathematics
2 answers:
liq [111]3 years ago
8 0
Answer:
x = 0
y = -3

Explanation:
The first given equation is:
x = 3 + y ............> I
The second given equation is:
21x + 8y = -24 ...........> II

Substitute with I in II and solve for y as follows:
21x + 8y = -24
21(3+y) + 8y = -24
63 + 21y + 8y = -24
29y = -24 - 63
29y = -87
y = -3

Substitute with y in equation I to get x as follows:
x = 3 + y
x = 3 + (-3)
x = 3 - 3
x = 0

Hope this helps :)
lisabon 2012 [21]3 years ago
5 0
The answer is that y is -3 and x is 0
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