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$\frac{j}{2} + 7 = 12$ What is $j$ ?

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Solve one-step addition and subtraction equations with decimals and fractions

Full solution

Q.

\frac{j}{2} + 7 = 12

What is

j

?

Isolate j term: Isolate the term containing j. $\newline$ To isolate the term with j, we need to get rid of the constant term on the same side as j. We do this by subtracting $7$ from both sides of the equation. $\newline$ $\frac{j}{2} + 7 - 7 = 12 - 7$
Simplify equation: Simplify both sides of the equation. $\newline$ After subtracting $7$ from both sides, we get: $\newline$ $\frac{j}{2} = 5$
Solve for j: Solve for j. $\newline$ To solve for j, we need to get rid of the fraction by multiplying both sides of the equation by $2$ . $\newline$ $\frac{j}{2} \times 2 = 5 \times 2$
Simplify final result: Simplify the equation. $\newline$ Multiplying both sides by $2$ gives us: $\newline$ $j = 10$

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