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lianna [129]
3 years ago
15

515x + 285y=11,080. X+Y=30

Mathematics
2 answers:
Marat540 [252]3 years ago
7 0

Answer:

x = 11, y = 19.

Step-by-step explanation:

515x + 285y=11,080

x + y = 30

Divide first equation by 5:

103x +57y = 2216

Now multiply the second equation by -57:

-57x - 57y =  -1710

Adding the last 2 equations:

46x = 506

x = 506/46 = 11

Substituting for x in x + y = 30:

11 + y = 30

y = 19.

Nostrana [21]3 years ago
3 0

Answer:

work is shown and pictured

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