Question

please give me correct ans ​

Answer 1

answer: 2) -1/2

Step-by-step explanation:

7m - 3m = 2n - 4n

4m= -2n

2m= -n

m/n = - 1/2

Answer 2

$Solution \:$

Given :-

$7m \: + 4n \: = \: 3m \: + 2n$

To find :-

$value \: of \: \dfrac{m}{n}$

Solution :-

$7m + 4n = 3m + 2n$

Tranpose like terms to a side

$7m - 3m \: = \: - 4n \ + 2n$

$4m \: = \: - 2n$

$- 2m \: = \: n$

$- 2 \: = \: \dfrac{n}{m}$

Taking reciprocal on both sides

$\dfrac{1}{ - 2} = \dfrac{m}{n}$

$\dfrac{ - 1}{2} = \dfrac{m}{n}$

So, your answer is option 2

Know more :-

Transportations :-

If we transpose + after transpose it becomes -

If we tranpose - after tranpose it becomes +

If we tranpose × after tranpose it becomes ÷

If we tranpose ÷ after tranpose it becomes ×

Multiplication of signs:-

(+) ( -) = -

(-) ( +) = -

( + ) ( + ) = +

(-) (-) = +