How to solve 3/7 - (- 4)/9

1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

Solve 3/7 - (- 4)/9 | Equatix

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$$\frac{3}{7}-\frac{(-4)}{9}$$

$\frac{55}{63}\approx 0.873015873$

Fraction $\frac{-4}{9}$ can be rewritten as $-\frac{4}{9}$ by extracting the negative sign.

$$\frac{3}{7}-\left(-\frac{4}{9}\right)$$

The opposite of $-\frac{4}{9}$ is $\frac{4}{9}$.

$$\frac{3}{7}+\frac{4}{9}$$

Least common multiple of $7$ and $9$ is $63$. Convert $\frac{3}{7}$ and $\frac{4}{9}$ to fractions with denominator $63$.

$$\frac{27}{63}+\frac{28}{63}$$

Since $\frac{27}{63}$ and $\frac{28}{63}$ have the same denominator, add them by adding their numerators.

$$\frac{27+28}{63}$$

Add $27$ and $28$ to get $55$.

$$\frac{55}{63}$$

$\frac{5 \cdot 11}{3 ^ {2} \cdot 7} = 0.873015873015873$