(3)∵x≠2，x≠3

Both sides are multiplied by (x-2)(x-3) at the same time.

(x-3)+2(x-3)=2(x-2)

3x 9 = 2x 4

x=5

The solution of the measured equation is: x=5.

(4)∵x≠2

Multiply both sides by (x-2)

1+3(x-2)=x+ 1

3x-5=x+ 1

x=3

The test shows that the solution of the equation is: x=3.