explain 17/18-3/20 — step-by-step solution

Let's evaluate:

\frac{17}{18} - \frac{3}{20}

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

\frac{17 \times 10 - 3 \times 9}{18 \times 10}

ⓘMultiplications are done before additions and subtractions:

17 \times 10

(10 + 7) \times 10

10 \times 10 + 7 \times 10

100 + 70

170

‖

18 \times 10

(10 + 8) \times 10

10 \times 10 + 8 \times 10

100 + 80

180

ℹ

-3 \times 9

-27

\frac{170 - 27}{180}

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

170 - 27

143

▶Result:

\frac{143}{180}

The approximate value of:

\frac{143}{180}

is:

▷

\approx 0.7944