x-13x+4+2x+93x+4

Combine the numerators over the common denominator.

x-1+2x+93x+4

Add x and 2x.

3x-1+93x+4

Add -1 and 9.

3x+83x+4

Add (x-1)/(3x+4)+(2x+9)/(3x+4)

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# Add (x-1)/(3x+4)+(2x+9)/(3x+4)

x-13x+4+2x+93x+4

Combine the numerators over the common denominator.

x-1+2x+93x+4

Add x and 2x.

3x-1+93x+4

Add -1 and 9.

3x+83x+4

Add (x-1)/(3x+4)+(2x+9)/(3x+4)