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Oduvanchick [21]
4 years ago
7

Anyone know how to do this one? 2x+7y=-1 4x-3y=-19

Mathematics
1 answer:
nlexa [21]4 years ago
7 0
<span>2x+7y=-1  (1)
4x-3y=-19 (2)

multiply equation (1) by 2
4x + 14y = -2 (1')
</span>4x - 3y =  -19 (2)
---------------------subtract
17y = 17
 y = 1

<span>2x+7y=-1
</span><span>2x+7(1)=-1
</span>2x + 7 = -1
2x = -8
  x = -4

answer
(-4, 1)
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