Question

what value of a is a solution to this equation? 10a = 70 a = 5 a = 7

Explanation:

Step1: Solve the equation for a

To solve \( 10a = 70 \), we divide both sides of the equation by 10.

$$ \frac{10a}{10}=\frac{70}{10} $$

Step2: Simplify both sides

Simplifying the left side gives \( a \), and simplifying the right side gives \( 7 \). So \( a = 7 \). We can also check by substituting back: for \( a = 5 \), \( 10\times5 = 50
eq70 \); for \( a = 7 \), \( 10\times7 = 70 \), which matches the right side.

Answer:

\( a = 7 \) (or in the multiple - choice context, the option with \( a = 7 \))