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Bot GPT 4-o mini To solve the equation \( \frac{3}{7} = \frac{x}{49} \), you can use cross-multiplication.
1. Cross-multiply to get:
\[
3 \cdot 49 = 7 \cdot x
\]
2. Calculate \( 3 \cdot 49 \):
\[
3 \cdot 49 = 147
\]
3. Now you have:
\[
147 = 7x
\]
4. To solve for \( x \), divide both sides by 7:
\[
x = \frac{147}{7} = 21
\]
So \( x = 21 \).
The answer is c. 21.