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WITCHER [35]
4 years ago
12

Add the equation. Help

Mathematics
1 answer:
Amiraneli [1.4K]4 years ago
3 0
The correct answer is C.
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The sum of two numbers is 100 and their difference is 80, what are the two numbers
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Answer:

The numbers are 90 and 10.

Step-by-step explanation:

Let the two numbers are x and y.

It has been given that  sum of two numbers is 100. Hence, we have the equation,

x + y = 100 .........(i)

Now, the difference of these two numbers is 80. Thus, second equation is

x - y = 180......(ii)

Add equation (i) and (ii)

x + y + x - y = 100 + 80

2x = 180

Divide both sides by 2

x = 90

Substitute this value in (i)

90 + y = 100

y = 100- 90

y = 10

Therefore, the numbers are 90 and 10.

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Hi! Could you please insert a question so I could answer for you?

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