How to solve (21)/(13)

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 (21)/(13) | Equatix

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Question

$$\frac{ 21 }{ 13 }$$

Evaluate

$\frac{21}{13}\approx 1.615384615$

Steps For Long Division Method

Use the $1^{st}$ digit $2$ from dividend $21$

$$\begin{array}{l}\phantom{13)}\phantom{1}\\13\overline{)21}\\\end{array}$$

Since $2$ is less than $13$, use the next digit $1$ from dividend $21$ and add $0$ to the quotient

$$\begin{array}{l}\phantom{13)}0\phantom{2}\\13\overline{)21}\\\end{array}$$

Use the $2^{nd}$ digit $1$ from dividend $21$

$$\begin{array}{l}\phantom{13)}0\phantom{3}\\13\overline{)21}\\\end{array}$$

Find closest multiple of $13$ to $21$. We see that $1 \times 13 = 13$ is the nearest. Now subtract $13$ from $21$ to get reminder $8$. Add $1$ to quotient.

$$\begin{array}{l}\phantom{13)}01\phantom{4}\\13\overline{)21}\\\phantom{13)}\underline{\phantom{}13\phantom{}}\\\phantom{13)9}8\\\end{array}$$

Since $8$ is less than $13$, stop the division. The reminder is $8$. The topmost line $01$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $1$.

$$\text{Quotient: }1$$ $$\text{Reminder: }8$$

Show Solution

Factor

$\frac{3 \cdot 7}{13} = 1\frac{8}{13} = 1.6153846153846154$