Question

Resolva;
a] 1/3+2/5=
b]7/2+2/3=
c]2+1/4=
d]4-1/7=
e]3/2-1/4=
f]2-7/6+3/4=

Answer 1

Resposta:

A)

$\frac{1}{3} + \frac{2}{5} = \frac{6 + 5}{15} = \frac{9}{15} \div 3 = \frac{3}{5}$

B)

$\frac{7}{2} + \frac{2}{3} = \frac{4 + 21}{6} = \frac{25}{6}$

C)

$\frac{2 + 1}{4} = \frac{3}{4}$

D)

$\frac{4 - 1}{7} = \frac{3}{7}$

E)

$\frac{3}{2 - 1} \div \frac{4}{1} = \frac{3}{1} . \frac{1}{4} = \frac{3}{4}$

F)

$\frac{2 - 7}{6 + 3} \div \frac{4}{1} = \frac{ - 5}{9} . \frac{1}{4} = - \frac{ - 5}{36}$