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j2+7=12\frac{j}{2} + 7 = 12 What is jj?

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Solve one-step addition and subtraction equations with decimals and fractionsright chevron icon

Full solution

Q. j2+7=12\frac{j}{2} + 7 = 12 What is jj?
  1. Isolate j term: Isolate the term containing j.\newlineTo 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 77 from both sides of the equation.\newlinej2+7−7=12−7\frac{j}{2} + 7 - 7 = 12 - 7
  2. Simplify equation: Simplify both sides of the equation.\newlineAfter subtracting 77 from both sides, we get:\newlinej2=5\frac{j}{2} = 5
  3. Solve for j: Solve for j.\newlineTo solve for j, we need to get rid of the fraction by multiplying both sides of the equation by 22.\newlinej2×2=5×2\frac{j}{2} \times 2 = 5 \times 2
  4. Simplify final result: Simplify the equation.\newlineMultiplying both sides by 22 gives us:\newlinej=10j = 10

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