Question

what number must be added to 3 1/2 of 4/5 so that the sum may be 18​

Answer 1

Answer:

17/10

Step-by-step explanation:

Let the no. be x

Therefore,

31/2 +4/5 + x = 18

(155 + 8 + 10x)/10 = 18 [ Taking LCM of 2, 5 and 1]

163 + 10x = 180

10x = 180 - 163

x = 17/10

Hence,

17/10 must be added to 31/2 and 4/5 to get 18

HOPE THIS HELPS!!

Answer 2

Answer = 76/5

Step-by-step explanation:

let the added number be x

3 1/2 × 4/5 + x = 18

14/5+x=18

x=18-14/5

90-14/5

=76/5

Or

15 1/5