spiderzan123 spiderzan123

15-06-2016
Mathematics

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When –3 is multiplied by the sum of a number and 8, the result is –21. Find the number.

Respuesta :

Kunchan Kunchan

15-06-2016

let's take the number as a
-3 (a + 8) = -21
a + 8 = (-21 / -3)
a + 8 = 7
a = -1

that number is -1

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