Respuesta :

Answer:

Maria originally had 7 pencils in her bag.

Step-by-step explanation:

The equation we should use is  x + 3 = 10. In order to solve this equation we should reverse it, so the equation is now 10 - 3 = x.

dekideki

Answer:

7 pencils

Step-by-step explanation:

First,, the equation is x+3=10. Then,, we can move the constant (3) to the right of the equation. This then becomes x=10-3. Then we can get the value of x by subtracting 3 from 7.

Hope this helped !! :)) have a great day !

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