Question

Can you please help me? Like right now
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Answer 1

Answer:

1..4/10

2..-2/21

3..3/6

4.7/27

Answer 2

Answer:

4. (a) 7/10-( ? )=3/10

?=7/10-3/10=(7-3)/10=4/10=2/5

(b) ( ? )-3/21=5/21

? =5/21+3/21=(5+3)/21=8/21

(c) ( ? )-3/6=3/6

? =3/6+3/6=(3+3)/6=6/6=1

(d) ( ? )+5/27=12/27

? =12/27-5/27=(12-5)/27=7/27