sierrraannn838 sierrraannn838

12-10-2017
Mathematics

contestada

If 9 is added to twice a number and this sum is multiplied by 2, the result is the same as if the number is multiplied by negative −3 and 4 is added to the product. what is the number?

Respuesta :

ejelonubenedict ejelonubenedict

14-10-2017

let the number be x
(9+2x)×2= (-3x)+4
18+4x=-3x+4
4x+3x=4-18
7x=-14
x=-2

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