Respuesta :

icerina006

Answer:

A) -3

Step-by-step explanation:

-3x+7x=-12(add -3 and +7 which gives +4 or just 4)

so 4x=-12(divide 4 on both sides of equation)

that gives x=-3 as 4/4 is one and 12/4 =3 and because there is minus sign in front of 12 so it is -3

Answer:

a) -3

I took the test, hope this helps :)

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