Question

1) 3/4+(-1/8)

2) -5/12+(-7/24)

3)1+(-7/8)

4)13/30-1/3

5)4/21-(-5/28)

Answer 1

a) \(\frac{3}{4}+\left(-\frac{1}{8}\right)\)

\(=\frac{6}{8}-\frac{1}{8}=\frac{5}{8}\)

b) \(-\frac{5}{12}+\left(-\frac{7}{24}\right)=\left(-\frac{10}{24}\right)+\left(-\frac{7}{24}\right)=-\frac{17}{24}\)

c) \(1+\left(-\frac{7}{8}\right)=\frac{8}{8}-\frac{7}{8}=\frac{1}{8}\)

d) \(\frac{13}{30}-\frac{1}{3}=\frac{13}{30}-\frac{10}{30}=\frac{3}{30}\)

e) \(\frac{4}{21}-\left(-\frac{5}{28}\right)=\frac{4}{21}+\frac{5}{28}=\frac{16}{84}+\frac{15}{84}=\frac{31}{84}\)