Question

Faça as operações com fração:
A) 2/5+3/2+4/3
B)3/2-4/5+3/7
C)7/6×2/3×5/2

Me ajudem por favor

Answer 1

Olá!

Alternativa ( A )

$\frac{2}{5} + \frac{3}{2} + \frac{4}{3} = \frac{12}{30} + \frac{45}{30} + \frac{40}{30} = \frac{97}{30}$

5 , 2 , 3 | 5

1 , 2 , 3 | 2

1 , 1 , 3 | 3

1 , 1 , 1 | 5 × 2 × 3 = 30

Alternativa ( B )

$\frac{3}{2} - \frac{4}{5} + \frac{3}{7} = \frac{105}{70} - \frac{56}{70} + \frac{30}{70} = \frac{79}{70}$

2 , 5 , 7 | 2

1 , 5 , 7 | 5

1 , 1 , 7 | 7

1 , 1 , 1 | 2 × 5 × 7 = 70

Alternativa ( C )

$\frac{7}{6} \times \frac{2}{3} \times \frac{5}{2} = \frac{70}{36} = \frac{35}{18}$

Espero que seja útil !