explain 4/15-13/20
Let's calculate: 415 -1320
ⓘTo add fractions, put them over the same denominator, then add the numerators
4×4 -13×315×4
ⓘMultiplications are done before additions and subtractions: 4×4 = 16‖-13×3 = (-10 -3)×3 = -10×3 -3×3 = -30 -9 = -39‖15×4 = (10 + 5)×4 = 10×4 + 5×4 = 40 + 20 = 60
16 -3960
ⓘThe numerator and the denominator are computed before the division: 16 -39 = -23
▶Result:   -2360
The numeric value of: -2360 equals:
▷ ≈ -0.3833