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Find the value of two numbers if their sum is 12 and their difference is 4

User Jack Wire
by
8.3k points

2 Answers

5 votes

Answer:

8 and 4

Explanation:

Equation 1: Sum:

x + y = 12

Equation 2: Difference:

x - y = 4

Solution:

x + y = 12

x - y = 4

-------------

Add the two equations together:

2x = 16

Divide both sides by 2:

x = 8

Solve for y:

Use equation 1 substituting for x:

x + y = 12

8 + y = 12

Subtract 8 from both sides:

y = 4

Answer:

one number is 8 and the other number is 4.

8 + 4 = 12

8 - 4 = 4

User Buxizhizhoum
by
8.9k points
2 votes
x + y = 12
x - y = 4
-----------------add
2x = 16
x = 8

x - y = 4
8 - y = 4
y = 4

answer
two numbers: 8 and 4

doule check
sum = 8 + 4 = 12
difference = 8 - 4 = 4
User Abhilash Kishore
by
8.1k points

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