Question

 -7/21+(1+1/3)                                           help:<

Answer 1

` -7/21+(1+1/3) =-7/21 + ( 3/3 + 1/3)=-7/21 +4/3= -7/21 + 28/21= 21/21=1`

Answer 2

\(-\dfrac{7}{21}+\left(1+\dfrac{1}{3}\right)\)

\(=-\dfrac{1}{3}+1+\dfrac{1}{3}\)

\(=\left(-\dfrac{1}{3}+\dfrac{1}{3}\right)+1\)

\(=1\)

Answer 3

\(\dfrac{-7}{21}+\left(1+\dfrac{1}{3}\right)=\dfrac{-7}{21}+\dfrac{4}{3}=\dfrac{-7+28}{21}=\dfrac{21}{21}=1\)

Answer 4

 

 -7/21+(1+1/3)
= -7/21 + 4/3 = 1