Solve Fraction Equation E88Bac
1. **State the problem:** Solve the equation $$\frac{g+3}{g-2} = \frac{56}{21}$$ for $g$.
2. **Use the cross-multiplication rule:** For two fractions equal to each other, $$\frac{a}{b} = \frac{c}{d}$$, cross multiply to get $$a \times d = b \times c$$.
3. **Apply cross multiplication:**
$$ (g+3) \times 21 = (g-2) \times 56 $$
4. **Expand both sides:**
$$ 21g + 63 = 56g - 112 $$
5. **Bring all terms involving $g$ to one side and constants to the other:**
$$ 21g - 56g = -112 - 63 $$
$$ -35g = -175 $$
6. **Divide both sides by -35 to solve for $g$:**
$$ g = \frac{-175}{-35} = 5 $$
7. **Final answer:**
$$ g = 5 $$
This completes the solution for the first problem.