Question

1/3 +1/40 +4/20 +5/12

Answer 1

Explanation:

40/120 + 3/120 + 24/120 + 50/120

(40 + 3 + 24 + 50)/120= 117/120

Answer 2

• 
  `\sf{ (1)/(3) + (1)/(40) + \frac{ \red{\cancel{4}}}{ \red{\cancel{20}}} + (5)/(12) }`
• cross out the common factor
• 
  `\sf{ (1)/(3) + (1)/(40) + (1)/(5) + (5)/(12) }`
• Find common denominator and write the numerators above common denominator
• 
  `\sf{ (40)/(3 * 40) + (3)/(40 * 3) + (3 * 8)/(5 * 24) + (5 * 10)/(12 * 10) }`
• calculate the product or quotient
• 
  `\sf{ (40)/(120) + (3)/(120) + (24)/(120) + (50)/(120) }`
• write the numerator over common denominator
• 
  `\sf{ (40 \: + \: 3 \: + \: 24 \: + \: 50 )/(120) }`
• calculate the sum or difference
• 
  `\sf{ (117)/(120) }`
• cross out the common factor
• 
  `\sf{ (39)/(40) }`

Hence The answer Is 39/40

Hope it helps!!