Question

calcule simplificando Quando possível resultado
a)2/5 + 1/5
b)3/8 +1/8
c)1/2 + 2/3
d)2/5 +2/4​

Answer 1

Resposta:

a) 4

b) 5.6

c) 3.5

d) 4.9

espero ter ajudado

Answer 2

Resposta:

a)

$\dfrac{2}{5} + \dfrac{1}{5} = \dfrac{2 + 1}{5} = \\ \\ \Large\boxed{ \green{ \bf\dfrac{3}{5} }}$

b)

$\dfrac{3}{8} + \dfrac{1}{8} = \dfrac{4 \div 4}{8 \div 4} = \\ \\ \Large \boxed{ \green{\bf \dfrac{1}{2} }}$

c)

$\dfrac{1}{2} + \dfrac{2}{3} = \dfrac{3 \times 1 + 2 \times 2}{6} = \\ \\ \dfrac{3 + 4}{6} = \Large \boxed{ \green{ \bf \dfrac{7}{6} }}$

d)

$\dfrac{2}{5} + \dfrac{2}{4} = \dfrac{4 \times 2 + 5 \times 2}{20} = \\ \\ \dfrac{8 + 10}{20} = \dfrac{18 \div 2}{20 \div 2} = \\ \\ \Large\boxed{ \green{ \bf\dfrac{9}{10} }}$

$\Large \boxed{ \blue{ \bf \underline{Bons \: Estudos!}}}$