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anzhelika [568]
3 years ago
8

Find two numbers, if their sum is 115 and their difference is 7.

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0

Answer:

The numbers are 61 and 54.

Step-by-step explanation:

Let the numbers be x and y.

Their sum is 115:

x + y = 115

Their difference is 7:

x - y = 7

We have a system of two equations in two unknowns.

x + y = 115

x - y = 7

Add the equations to eliminate y, and solve for x.

2x = 122

x = 61

Now replace x in the first equation with 61 and solve for y.

x + y = 115

61 + y = 115

Subtract 61 from both sides.

y = 54

Answer: The numbers are 61 and 54.

Brrunno [24]3 years ago
5 0
The answer is 61 and 54 hopes this helps
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