Answer:
the number is -9
2 x -9 = -18
5 + -18 = -13
Explanation:
n - a number
five more: + 5
twice a number: 2 · n = 2n
five more than twice a number: 2n + 5
The equation:
2n + 5 = -13 subtract 5 from both sides
2n + 5 - 5 = -13 - 5
2n = -18 divide both sides by 2
2n/2 = -18/2
n = -9
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