`(7/41 -4/9)-(3/19+7/14)+(4/9-16/19)`
`=7/41 - 4/9 - 3/19 - 7/41 + 4/9 - 16/19`
`=(7/41-7/41) + (-4/9+4/9) + (-3/19-16/19)`
`=0 + 0 + (-19)/19`
`=-1`
`#LeMichael`
b) \(\left(\dfrac{7}{41}-\dfrac{4}{9}\right)-\left(\dfrac{3}{19}+\dfrac{7}{41}\right)+\left(\dfrac{4}{9}-\dfrac{16}{19}\right)\)
\(=\dfrac{7}{41}-\dfrac{4}{9}-\dfrac{3}{19}-\dfrac{7}{41}+\dfrac{4}{9}-\dfrac{16}{19}\)
\(=\left(\dfrac{7}{41}-\dfrac{7}{41}\right)+\left(\dfrac{-3}{19}-\dfrac{16}{19}\right)+\left(-\dfrac{4}{9}+\dfrac{4}{9}\right)\)
\(=0+\left(-1\right)+0\)
\(=-1\)