Question

1) usando a equivalência cálcule:

A)5/6 + 4/3 =
B)1/2 + 2/3 =
C) 7/8 + 4/5=
D) 5/6 + 3/4 =



2) continue calculando:


A)3/4 - 5/12=
B)1 - 3/4=
C) 3/2 - 2/3=
D) 1/2 - 1/6=

OBS: PRECISA DA CONTA


EXEMPLO DE COMO TENQUE FAZER

EXEMPLO DA 1: 2/3 + 4/5 = 10/15 + 12/15 = 22/15
2/3 = 4/6 = 6/9 = 8/12 = (10/15)
4/5 = 8/10 = (12/15)


EXEMPLO DA 2: 4/5 - 2/3 = 12/15 - 10/15 = 2/15




ME AJUDA PESSOAL!

Answer 1

1) usando a equivalência cálcule:

A)5/6 + 4/3 =

$\frac{5}{6} + \frac{4}{3} = \\ \\ \frac{15 + 24}{18} = \\ \\ \frac{39}{18} \div 3 \\ \\ \frac{13}{6}$


B)1/2 + 2/3 =

$\frac{1}{2} + \frac{2}{3} = \\ \\ \frac{3 + 4}{6} = \\ \\ \frac{7}{6}$

C) 7/8 + 4/5=
$\frac{7}{8} + \frac{4}{5} = \\ \\ \frac{35 + 32}{40} = \\ \\ \frac{67}{40}$

D) 5/6 + 3/4 =
$\frac{5}{6} + \frac{3}{4} = \\ \\ \frac{20 + 18}{24} \\ \\ \frac{38}{24} = \div 2\\ \\ \frac{19}{12}$



2) continue calculando:

A)3/4 - 5/12=

$\frac{3}{4} - \frac{5}{12} = \\ \\ \frac{36 - 20}{48} = > \frac{16}{48} \\ \\ = > \frac{1}{3}$

B)1 - 3/4=
$\frac{1}{1} - \frac{3}{4} = \\ \\ \frac{4 - 3}{4} = \\ \\ \frac{1}{4}$


C) 3/2 - 2/3=

$\frac{3}{2} - \frac{2}{3} = \\ \\ \frac{9 - 4}{6} = \\ \\ \frac{5}{6}$