Question

1) Subtract -4/21 from 5/14.
2) Verify that (a+b)+c=a+(b+c) where a=-1/2 ,b=3/4, c= 5/7
3) What should be added to -3/5 to get 3/7?
4) Simplify
-8/14x6/-15
5) Find the least number that must be added to 5,687 to make that perfect square​

Answer 1

Answer:

5/14-(-4/21)

5/14+4/21

$\frac{15 + 8}{42} = \frac{23}{42}$

1) answer

Step-by-step explanation:

2) answer (a+b)+c=a+(b+c)

=(-1/2+3/4)+5/7=-1/2(3/4+5/7)