Question

mark (✓) against the correct answer what should be added to 7/12 to get -4/15?
r.s Aggarwal class 8​

Answer 1

Step-by-step explanation:

Given :-

The number = 7/12

To find :-

What should be added to 7/12 to get -4/15?

Solution :-

Given number = 7/12

Let the required number to be added to 7/12 be X

On adding X to 7/12 then

=> X+(7/12)

According to the given problem

The result = -4/15

=> X+(7/12) = -4/15

=> X = (-4/15)-(7/12)

LCM of 15 and 12 = 60

=> X = [(-4×4)-(7×5)]/60

=> X = (-16-35)/60

=> X = -51/60

=> X = -17/20

Therefore, X = -17/20

Answer :-

The required number is -17/20

-17/20 should be added to get -4/15

Check:-

The required number =-17/20

Given number = 7/12

On adding them

=> (7/12)+(-17/20)

=>(7/12)-(17/20)

LCM of 12 and 20 = 60

=> [(7×5)-(17×3)]/60

=> (35-51)/60

=>-16/60

=> -(4×4)/(4×15)

=> -4/15

Given result.

Verified the given relations in the given problem.