Question

3/5 ab + 1/10 ab=
1/2 xy + 1/6 xy=
-1/5 m - 4/5 m=
2/3 x + 1/2 x + x=
- 8/5 a - 1/10 a - 4/15 a - 8/20 a =

Answer 1

a)  $\frac{3}{5} ab+\frac{1}{10}ab =\frac{6ab+ab}{10} =\frac{7}{10} ab$

b)  $\frac{1}{2} xy + \frac{1}{6} xy=\frac{3xy+xy}{6} =\frac{4}{6} xy=\frac{2}{3} xy$

c) $-\frac{1}{5} m-\frac{4}{5} m = \frac{-1-4}{5} m=\frac{-5}{5}m =-m$

d) $\frac{2}{3} x+\frac{1}{2}x+x = \frac{4+3+6}{6} x=\frac{13}{6} x$

e) $-\frac{8}{5} a-\frac{1}{10} a-\frac{4}{15} a-\frac{8}{20} a=\frac{(-96 -6-16-24)a}{60} =-\frac{142}{60}a =-\frac{71}{30}a$