explain 11/19-7/9
Let's evaluate: 1119 -79
ⓘTo add fractions, put them over the same denominator, then add the numerators
11×9 -7×1919×9
ⓘMultiplications are done before additions and subtractions:
11×9 = (10 + 1)×9 = 10×9 + 9 = 90 + 9 = 99‖-7×19 = (10 + 9)×-7 = 10×-7 + 9×-7 = -70 -63 = -133‖19×9 = (10 + 9)×9 = 10×9 + 9×9 = 90 + 81 = 171
99 -133171
ⓘThe numerator and the denominator are computed before the division: 99 -133 = -34
▶Result:   -34171
The approximate value of: -34171 equals:
▷ ≈ -0.1988