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lina2011 [118]
3 years ago
15

The sum of two numbers is −21. One number is 55 less than the other. Find the numbers.

Mathematics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

x = 17     y= -38

Step-by-step explanation:

x + y = -21

y = x - 55

It doesn't matter whether x or y is 55 less than the other right now.

<u>substitute for y:</u>

x + x - 55 = -21

<u>solve for x:</u>

2x = 34

x = 17

<u>solve for y:</u>

17 + y = -21

y = -38

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A gift basket that contains jars of jam and packages of bread mix costs $45. there are 8 items in the basket. jars of jam cost $
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Define jam and bread mix
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Let the number of jar of jam be x
Let the number of packages of bread mix be y

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Form equations and solve
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x + y = 8 --------------------- (1)
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Rewrite equation to make x the subject
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Substitute (1a) into (2)
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6(8 - y) + 5y = 45
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