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3 years ago

Can you please help me solving these ASAP homework due tomorrow and I have no clue what to do

Mathematics

1 answer:

igomit [66]3 years ago

4 0

For #7 multiply the 2nd equation by -1 and you will have
$x + 4y = -3$
$- x - 7y = 12$
add those two together to get y= -3 and plug that into any equation, so take
$x + 4( - 3) = - 3$
$x - 12 = - 3$
$x = 9$
$x = 9 \\ y = - 3$

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