Solved on Feb 15, 2024

Solve for ww where 39=w12\frac{3}{9}=\frac{w}{12}. Simplify the solution ww as much as possible.

STEP 1

Assumptions
1. We are given a proportion: 39=w12\frac{3}{9} = \frac{w}{12}.
2. We need to solve for the variable ww.

STEP 2

To solve for ww, we can use cross-multiplication. This means we multiply the numerator of one fraction by the denominator of the other fraction and set the products equal to each other.
3×12=9×w3 \times 12 = 9 \times w

STEP 3

Perform the multiplication on the left side of the equation.
36=9×w36 = 9 \times w

STEP 4

To isolate ww, we need to divide both sides of the equation by 9.
369=9×w9\frac{36}{9} = \frac{9 \times w}{9}

STEP 5

Simplify both sides of the equation. On the right side, the 9's cancel out, leaving ww by itself.
4=w4 = w

STEP 6

We have found the value of ww.
w=4w' = 4

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