Question

Which is the most efficient way to solve this equation?

X + 7 = 12

○Subtract 12 from both sides of the equation so all terms will
be on the same side of the equal sign.
○Add -7 to both sides because that will result in an equivalent
equation with x alone on one side
○Nothing, because the equation is already solved
○Add 7 to 12 because x equals 19.
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Answer 1

subtracting 7 from 12

Explanation:

That would be most efficient. Subtracting seven from twelve will quickly give you your value of x without moving the x itself. And there's no negatives

Answer 2

Add -7 to both sides because that will result in an equivalent

equation with x alone on one side

Explanation: