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Fiesta28 [93]
3 years ago
5

URGENT 30 POINTS! Solve. {y=x−75x+2y=7 Use the substitution method.

Mathematics
2 answers:
NeTakaya3 years ago
6 0
Y = x - 7 ---------- (1)
5x + 2y = 7 ------ (2)

Sub (1) into (2):
5x + 2(x -7) = 7
5x + 2x - 14 = 7
7x - 14 = 7
7x = 7 + 14
7x = 21
x = 3 ----- -sub into (1)
y = x - 7
y = 3 - 7
y = -4

Ans: x = 3, y = -4
Alecsey [184]3 years ago
4 0

Here is your answer, my good sir, or maiden.


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