Solve nd commutative prop ( b) - 2/7 and - 1/9 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\frac { - 2 } { 7 } - \frac { 1 } { 9 }$$

Evaluate

$-\frac{25}{63}\approx -0.396825397$

Solution Steps

Fraction $\frac{-2}{7}$ can be rewritten as $-\frac{2}{7}$ by extracting the negative sign.

$$-\frac{2}{7}-\frac{1}{9}$$

Least common multiple of $7$ and $9$ is $63$. Convert $-\frac{2}{7}$ and $\frac{1}{9}$ to fractions with denominator $63$.

$$-\frac{18}{63}-\frac{7}{63}$$

Since $-\frac{18}{63}$ and $\frac{7}{63}$ have the same denominator, subtract them by subtracting their numerators.

$$\frac{-18-7}{63}$$

Subtract $7$ from $-18$ to get $-25$.

$$-\frac{25}{63}$$

Factor

$-\frac{25}{63} = -0.3968253968253968$