Question

a) (-3)/4 + 5/4 -8/4  b)1/6 - (-7)/6 + (-11)/6

Answer 1

a) \(\dfrac{-3}{4}+\dfrac{5}{4}-\dfrac{8}{4}\)

\(=\dfrac{-3}{4}+\dfrac{5}{4}+\dfrac{-8}{4}\)

\(=\dfrac{-3+5+\left(-8\right)}{4}\)

\(=\dfrac{-6}{4}\)

\(=\dfrac{-3}{2}\)

b) \(\dfrac{1}{6}-\dfrac{-7}{6}+\dfrac{-11}{6}\)

\(=\dfrac{1}{6}+\dfrac{7}{6}+\dfrac{-11}{6}\)

\(=\dfrac{1+7+\left(-11\right)}{6}\)

\(=\dfrac{-3}{6}\)

\(=\dfrac{-1}{2}\)