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statuscvo [17]
4 years ago
10

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

Mathematics
1 answer:
igomit [66]4 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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