Question

add the following pairs of rational numbers 5/-7, -2/-7
plz step by step ​

Answer 1

Answer:

so to add any ration number the denominators should be same here they r same so v can add the numerator but the denominators have negative sign so change it to positive . Because denominators can be never negative. to change them positive change the numerator negative so it becomes:-

-5/7

in second number both numerator and denominator is negative so change both into positive.

2/7

now add it

(-5)+2/7

since it is negative + positive = gives u negative so the answer is

(-7)/7

now the main thing is to simply when we simplify u get -1

so the answer is -1