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klio [65]
3 years ago
15

A system of equations is shown below.

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0
7x - 4y = 0......multiply by -2
2x + 7y = 57...multiply by 7
-----------------
-14x + 8y = 0 (result of multiplying by -2)
14x + 49y = 399 (result of multiplying by 7)
----------------add
57y = 399
y = 399/57
y = 7

7x - 4y = 0
7x - 4(7) = 0
7x - 28 = 0
7x = 28
x = 28/7
x = 4

so ur solution is (4,7) with the y value being 7 <==
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