explain 1/15+3/20
Let's evaluate: 115 + 320
ⓘTo add fractions, put them over the same denominator, then add the numerators
1×4 + 3×315×4
ⓘMultiplications are done before additions and subtractions: 3×3 = 9‖15×4 = (10 + 5)×4 = 10×4 + 5×4 = 40 + 20 = 60
ℹ1×4 = 4
4 + 960
ⓘThe numerator and the denominator are computed before the division: 4 + 9 = 13
▶Result:   1360
The numeric value of: 1360 is:
▷ ≈ 0.2167