Question

sum of two rational number is 3/5. If one of them is -2/7, find the other.

Answer 1

Answer:

31/35

Step-by-step explanation:

let,

the other number is x

then,

3/5=-2/7+x

x = 3/5 +2/7

x = 31/35

Answer 2

Answer:

the answer of this question is 31/35.

Step-by-step explanation:

it can shown as follows:

let the other rational number= 'y'

as written in question the sum of y and -2/7 = 3/5.

so we just have to solve the above equation.

⇒y + (-2/7) = 3/5

⇒y-2/7=3/5.

now we transpose -2/7 to right hand side. so it will change from negative to positive, it can be written as follows:

y= 3/5 + 2/7.

now we take the LCM of 5 and 7 which is 35. and the next step is:

(21+10)/35

≈ 31/35.

you don't need to answer the question in so much detail in your notebook or your exams. I have done it in so much to make it understand to you in a better way step by step.