Question

Answer 1

a) \(=\left(-\dfrac{3}{4}+\dfrac{2}{5}\right)\times\dfrac{7}{3}+\left(\dfrac{3}{5}+-\dfrac{1}{4}\right)\times\dfrac{7}{3}\)

\(=\dfrac{7}{3}\times\left(-\dfrac{3}{4}+\dfrac{2}{5}+\dfrac{3}{5}+-\dfrac{1}{4}\right)\)

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

\(=\dfrac{7}{3}\times0=0\)

Answer 2

`(-3/4 + 2/5) : 3/7 + (3/5 + -1/4) : 3/7`

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

`= (-3/4 + 3/5 + 2/5 + -1/4) xx 7/3`

`= 0 xx 7/3`

`= 0`

Answer 3