26VelezTiana 26VelezTiana

18-03-2021
Mathematics

contestada

what is 3x- 12 = -2x - 42 ??? I know it equals -6 cause i did it on a caculator but how do i explain my answer ??

Respuesta :

simmyndlabu57 simmyndlabu57

18-03-2021

Answer

-6

Step-by-step explanation:

3x-12=-2x-42

(Collect like terms together:)

3x+2x=-42+12

(when the number crosses the equal sign it changes signs)

5x/5=-30/5

(We devided by 5 cause we looking for x not 5x)

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