explain 8/15-6/11
Let's evaluate: 815 -611
ⓘTo add fractions, put them over the same denominator, then add the numerators
8×11 -6×1515×11
ⓘMultiplications are done before additions and subtractions:
8×11 = (10 + 1)×8 = 10×8 + 8 = 80 + 8 = 88‖-6×15 = (10 + 5)×-6 = 10×-6 + 5×-6 = -60 -30 = -90‖15×11 = 15×(10 + 1) = 15×10 + 15 = 150 + 15 = 165
88 -90165
ⓘThe numerator and the denominator are computed before the division: 88 -90 = -2
▶Result:   -2165
The numeric value of: -2165 equals:
▷ ≈ -1.2121×10-2