Question

Using appropriate properties find 8/7+(4/5) +6/7+(-14/5)

(2 mark question)​

Answer 1

➤ Answer :-

$\dashrightarrow \sf \frac{8}{7} + \frac{4}{5} + \frac{6}{7} + \frac{( - 14)}{5}$

LCM of 7 and 5 is 35.

$\dashrightarrow \sf \frac{8 \times 5}{7 \times 5} + \frac{4 \times 7}{5 \times 7} + \frac{6 \times 5}{7 \times 5} + \frac{( - 14) \times 7}{5 \times 7}$

$\dashrightarrow \sf \frac{40}{35} + \frac{28}{35} + \frac{30}{35} + \frac{( - 98)}{35}$

$\dashrightarrow \sf \frac{40 + 28 + 30 + ( - 98)}{35}$

$\dashrightarrow \sf \frac{0}{35}$

$\Huge\therefore$The answer is $\sf\frac{0}{35}$

Answer 2

Answer:

8/7 + 4/5 + 6/7 +(- 14/5 )

the LCM is 35.

40 + 28 + 30 -98 = 98 -98

35 35

= 0