Question

What should be added to thrice the rational number −5 by 2 to get 2 by 7?

Answer 1

Answer:

Step-by-step explanation:

let the number to be added be 'x'.

∴ 3(-5/2) + x = 2/7

-15/2 +x = 2/7

x=2/7 + 15/2

       lcm of (2,7)=14

∴ X= 2*2/7*2 + 15*7/2*7

x= 4+105/14

∴x=109/14.

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