one of his steps is to multiply both sides of the equation by 7 . why?
a. multiplying both sides of the equation by 7 undoes the addition in the original problem
b. multiplying both sides of the equation by 7 undoes the subtraction in the original problem
c. multiplying both sides of the equation by 7 undoes the division in the original problem
d. the negative sign in -6 must be changed to positive
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The correct answer is:
c. multiplying both sides of the equation by 7 undoes the division in the original problem.
In the equation \( \frac{x}{7} - 47 = -6 \), multiplying both sides by 7 helps eliminate the division by 7 from the left side, allowing for easier simplification and solving of the equation.
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1 answer