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Drupady [299]
4 years ago
9

Solve by using elimination 3x+y=27 -3x+4y=-42

Mathematics
1 answer:
Nina [5.8K]4 years ago
3 0
Hello : 
<span>3x+y=27 ...(1)
-3x+4y=-42 ...(2)
(1) +(2) : 5y = -15
y = -3
subsct in : (1)      3x -3 = 27
3x= 30
x=10

</span>
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