explain 3/8-7/9
Let's evaluate: 38 -79
ⓘTo add fractions, put them over the same denominator, then add the numerators
3×9 -7×88×9
ⓘMultiplications are done before additions and subtractions: 3×9 = 27
ℹ-7×8 = -56‖8×9 = 72
27 -5672
ⓘThe numerator and the denominator are computed before the division: 27 -56 = -29
▶Result:   -2972
The approximate value of: -2972 is:
▷ ≈ -0.4028