SOLUTION: Solve by appropriate method: Thinking of 2 numbers whose sum is 10, and difference is 4. Let X be first number, and let y be second number.

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Question 370580: Solve by appropriate method: Thinking of 2 numbers whose sum is 10, and difference is 4. Let X be first number, and let y be second number.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Letting x be first number, and let y be second number

x + y = 10

x - y = 4

Solving this system of two equations by adding them together

2x = 14

x = 7

The two numbers are 7 and 3  ( their sum 10)