the sum of -4 and a number is equal to -48 what


The sum of -4 and a number is equal to -48. What is the number?

Let x = the number. Because sum is a key word for addition, the equation is -4 + x = -48. Add 4 to both sides of the equation; -4 + 4 + x = -48 + 4. The variable is now alone: x = -44.

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Mathematics: the sum of -4 and a number is equal to -48 what
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