explain 13/18-14/15
Let's evaluate: 1318 -1415
ⓘTo add fractions, put them over the same denominator, then add the numerators
13×5 -14×618×5
ⓘMultiplications are done before additions and subtractions:
13×5 = (10 + 3)×5 = 10×5 + 3×5 = 50 + 15 = 65‖-14×6 = (-10 -4)×6 = -10×6 -4×6 = -60 -24 = -84‖18×5 = (10 + 8)×5 = 10×5 + 8×5 = 50 + 40 = 90
65 -8490
ⓘThe numerator and the denominator are computed before the division: 65 -84 = -19
▶Result:   -1990
The approximate value of: -1990 is:
▷ ≈ -0.2111