Solve the following system by any method -3x+5y=-9 and 4x+8y=12

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asked Sep 20, 2018 146k views

1 Answer

Anand G · Answer 1 · 2018-09-24T14:35:10+0000

-3x + 5y = -9 │ × 4
4x + 8y = 12 │ × 3

-12x + 20y = -36
12x + 24y = 36 +
-------------------------------
/ 44y = 0 ⇒ y = 0

4x + 8y = 12 but y = 0
4x + 0 = 12
4x = 12
x = 12/4
x = 3

Solve the following system by any method -3x+5y=-9 and 4x+8y=12

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