explain 4/5-5/13
Let's evaluate: 45 -513
ⓘTo add fractions, put them over the same denominator, then add the numerators
4×13 -5×55×13
ⓘMultiplications are done before additions and subtractions:
4×13 = (10 + 3)×4 = 10×4 + 3×4 = 40 + 12 = 52‖5×13 = (10 + 3)×5 = 10×5 + 3×5 = 50 + 15 = 65
ℹ-5×5 = -25
52 -2565
ⓘThe numerator and the denominator are computed before the division: 52 -25 = 27
▶Result:   2765
The approximate value of: 2765 equals:
▷ ≈ 0.4154