The answer is 150. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
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-15 plus 20 is 5.
The answer to this question is 60.
20 = 4p + 5 +p 20 = 5p + 5 5p = 20 - 5 = 15 5p = 15 p = 15/5 = 3
use a calulator, it's -5
s = 20