five times a number decreased by 18 minus 4 times the same number is -36 . what is the number?

five times a number decreased by 18 minus 4 times the same number is -36. what is the number?
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1 Answer

5x-18-4x=-36

5x-18+18-4x=-36+18

5x-4x=-18

x=-18

5(-18)-18-4(-18)=-36

-90-18+72=-36

-108+72=-36

-36=-36
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