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The sum of a certain number and a second number is -42. The difference of the first number and the second number is 52. Find the number?
Wiki User
∙ 15y ago
Let the first number be x, and the second number be y. So,
x + y = -42
x - y = 52 add the equations;
2x = 10 divide by 2 both sides;
x = 5 substitute 5 for x into the first equation;
5 + y = -42 subtract 5 to both sides;
y = - 47
So the numbers are 5 and -47.
Check:
5 + (-47) = -42
5 - (-47) = 5 + 47 = 52.
Wiki User
∙ 15y ago
Let the first number be x and the second number be y. From the given information, we can form the following equations:
- x + y = -42
- x - y = 52
By solving these two equations simultaneously, we can find the values of x and y. Solving the equations gives x = 5 and y = -47.
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