xingxaliu xingxaliu

03-06-2021
Mathematics

contestada

Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now

Respuesta :

arfoullea arfoullea

03-06-2021

Answer:

X - 7 = - 3

X = - 3 + 7

X = 4

the 7 turns positive because it was moved to the other side of the symbol "=" so we reverse the sign

- becomes +

and

+ becomes -

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