What follows is the solution of the formal equation you transformed, and the solution of substituting the original fractional equation so that the denominator is 0.

( 1)- 1

Increase the heel to 2.

(2)3

Increase heel to 1

(3)

When the follow-up is 3, m=6.

When the increment is -3, m= 12.

(4) 1.206* 10 minus 10.