is \( \frac{B}{7}=\frac{12}{A} \)

To solve for either variable, you can cross-multiply the equation \( \frac{B}{7} = \frac{12}{A} \). This gives you the equation \( B \cdot A = 12 \cdot 7 \), or \( B \cdot A = 84 \). This means that the product of \( B \) and \( A \) is equal to 84. You can express one variable in terms of the other, for example, \( B = \frac{84}{A} \) or \( A = \frac{84}{B} \). Feel free to substitute any value for \( A \) or \( B \) (as long as you stick with non-zero values) to find the corresponding value of the other variable! It’s a fun little game of balancing equations!