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Mrac [35]
3 years ago
11

The sum of two numbers is 51 and the difference is 15 . What are the numbers?

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0
X+y=51
x-y=15
adding equation
2x=66
x=33
y=51-33
y=18
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I'm going to use the substitution method. 

If y = - 3/2 - 7, then:

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Simplify to get:

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svetlana [45]

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Question:

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