child21
child21
24-01-2019
Mathematics
contestada
Solve with elimination please
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meredith48034
meredith48034
24-01-2019
7(5x + y = 9)
10x - 7y = -18
35x + 7y = 63
10x - 7y = -18
45x = 45
x = 1
5(1) + y =9
5 + y = 9
y = 4
(1,4)
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