Question

a, 7/3 + 1/2 - -3/70

b. 5/12 - 3/-16 + 3/ 4 

Answer 1

a) 7/3 + 1/2 - - 3/70

= 7/3 + 1/2 + 3/70

= 490/210 + 105/210 + 9/210

= 604/210

= 302/105

b) 5/12 - 3/-16 + 3/4

= 5/12 - -3/16 + 3/4

= 5/12 + 3/16 + 3/4

= 20/48 + 9/48 + 36/48

= 65/48

#Chúc cậu học tốt nè :>

 

Answer 2

a)\(\dfrac{7}{3}+\dfrac{1}{2}--\dfrac{3}{70}\)

\(=\dfrac{17}{6}+\dfrac{3}{70}\)

\(=\dfrac{302}{105}\)

b)\(\dfrac{5}{12}-\dfrac{-3}{16}+\dfrac{3}{4}\)

\(=\dfrac{5}{12}+\dfrac{3}{16}+\dfrac{3}{4}\)

\(=\dfrac{29}{48}+\dfrac{3}{4}\)

\(=\dfrac{65}{48}\)