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Scrat [10]
3 years ago
10

If 2x + 5y = 21 and x + y = 3, then what is the solution

Mathematics
1 answer:
Viefleur [7K]3 years ago
8 0
2x+5y=21, x+y=3
y=3-x
2x+5y=21
2x+5(3-x) =21
2x+15-5x=21
2x-5x+15=21
-3x+15=21
-3x=21-15
-x=6/3
-x=2
x=-2

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Step-by-step explanation:

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Since the total cost of the trees including the delivery was $168, so we can get an equation as:

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5 0
3 years ago
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