Evaluate 7/20-(-1/2)+3/10

$\frac{7}{20} - (- \frac{1}{2}) + \frac{3}{10}$

Multiply $- (- \frac{1}{2})$ .

Multiply $- 1$ by $- 1$ .

$\frac{7}{20} + 1 (\frac{1}{2}) + \frac{3}{10}$

Multiply $\frac{1}{2}$ by $1$ .

$\frac{7}{20} + \frac{1}{2} + \frac{3}{10}$

Find the common denominator.

Multiply $\frac{1}{2}$ by $\frac{10}{10}$ .

$\frac{7}{20} + \frac{1}{2} \cdot \frac{10}{10} + \frac{3}{10}$

Multiply $\frac{1}{2}$ by $\frac{10}{10}$ .

$\frac{7}{20} + \frac{10}{2 \cdot 10} + \frac{3}{10}$

Multiply $\frac{3}{10}$ by $\frac{2}{2}$ .

$\frac{7}{20} + \frac{10}{2 \cdot 10} + \frac{3}{10} \cdot \frac{2}{2}$

Multiply $\frac{3}{10}$ by $\frac{2}{2}$ .

$\frac{7}{20} + \frac{10}{2 \cdot 10} + \frac{3 \cdot 2}{10 \cdot 2}$

Multiply $2$ by $10$ .

$\frac{7}{20} + \frac{10}{20} + \frac{3 \cdot 2}{10 \cdot 2}$

Reorder the factors of $10 \cdot 2$ .

$\frac{7}{20} + \frac{10}{20} + \frac{3 \cdot 2}{2 \cdot 10}$

Multiply $2$ by $10$ .

$\frac{7}{20} + \frac{10}{20} + \frac{3 \cdot 2}{20}$

Combine the numerators over the common denominator.

$\frac{7 + 10 + 3 \cdot 2}{20}$

Simplify the expression.

Multiply $3$ by $2$ .

$\frac{7 + 10 + 6}{20}$

Add $7$ and $10$ .

$\frac{17 + 6}{20}$

Add $17$ and $6$ .

$\frac{23}{20}$

The result can be shown in multiple forms.

Exact Form:

$\frac{23}{20}$

Decimal Form:

$1.15$

Mixed Number Form:

$1 \frac{3}{20}$