4/5+7/10

Let's evaluate:

\frac{4}{5} + \frac{7}{10}

ⓘ To add fractions, put them over the same denominator, then add the numerators. We choose

10

, the least common multiple of

5

and

10

. Multiplying the numerator and the denominator by the same number does not change the fraction:

\frac{4}{5} + \frac{7}{10}

\frac{4 \times 2}{5 \times 2} + \frac{7}{10}

\frac{4 \times 2 + 7}{10}

\frac{4 \times 2 + 7}{10}

ⓘ Perform multiplications before additions and subtractions:

4 \times 2

8

\frac{8 + 7}{10}

ⓘ The numerator and the denominator are computed before the division:

8 + 7

15

\frac{15}{10}

ⓘ We simplify the fraction by dividing the numerator and the denominator by

5

, their greatest common divisor:

\frac{15}{10}

\frac{3 \times 5}{2 \times 5}

\frac{3}{2}

▶Result:

\frac{3}{2}

The numeric value of:

\frac{3}{2}

is:

▷

1.5

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