Question

7)efetue as adições e/ou subtrações abaixo:
a)1/12+3/6+2/6=
b)5/12+1/12+15/12=
c)(-2/5)+(-3/10)=
d)11/12-(2/9)+(-5/6)=​

Answer 1

a) $\frac{1}{12}$ + $\frac{3}{6}$ + $\frac{2}{6}$ =

a) $\frac{1}{12}$ + $\frac{5}{6}$ =

a) $\frac{1}{12}$ + $\frac{10}{12}$ = $\frac{11}{12}$

b) $\frac{5}{12}$ + $\frac{1}{12\\}$ + $\frac{15}{12}$ = $\frac{21}{12}$

c) (-$\frac{2}{5}$) + (-$\frac{3}{10}$) =

c) (-$\frac{4}{10}$) + (-$\frac{3}{10}$) =

c) - $\frac{4}{10}$ - $\frac{3}{10}$ = -$\frac{7}{10}$

d) $\frac{11}{12}$ - $\frac{2}{9}$ + (-$\frac{5}{6}$) =​

d) $\frac{11}{12}$ - $\frac{10}{12}$ - $\frac{2}{9}$ =​

d) $\frac{1}{12}$ - $\frac{2}{9}$ =​

d) $\frac{3}{36}$ - $\frac{8}{36}$ =​ - $\frac{5}{36}$