Question

What no should be added to
-9/16 to get 13/18?

13 P
- a to get
16​

Answer 1

Let x be added to each number then all the 4 numbers will be in proportion

therefore , 3+x , 5+x , 13+x , 19+x are now in proportion

using proportionality ,

3+x / 5+x = 13+x / 19+x

(3+x) × (19+x) = (13+x) × (5+x)

57 +3x+19x+x^2 = 65+13x+5x+x^2

22x+57 = 18x + 65

22x - 18x = 65 - 57

4x = 8

x =2

therefore 2 should be added

Answer 2

Answer:

let, no. which should added be x

-9/16 + x=13/18

=>x=13/18-(-9/16)

=>x=13/18+9/16

lcm of 18 and 16 is 144

=>x=(13×8 + 9×9)/144

=>x=(104 + 81)/144

=>x=185/144

=>x=1.284...

=>x=1.28(approximately)

Step-by-step explanation:

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