Question

Respondam me (preciso da conta)

Answer 1

a) $\frac{3}{9} +\frac{4}{9}=\frac{7}{9}$

b) $\frac{1}{2} +\frac{3}{7} =\frac{7+6}{14}=\frac{13}{14}$

c) $\frac{4}{8} -\frac{1}{8}=\frac{4-1}{8}=\frac{3}{8}$

d) $\frac{7}{2} -\frac{1}{3} -\frac{1}{4}=\frac{42-4-3}{12}=\frac{35}{12}$

e) $4.\frac{5}{7}=\frac{4}{1} .\frac{5}{7}=\frac{4.5}{1.7}=\frac{20}{7}$

f) $\frac{7}{18}.4=\frac{7}{9}.2=\frac{14}{9}$