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A=NUMERADOR
B=DENOMINADOR
- SEGUN DATO B-3=A....B=A+3
A+2/B+2=1/2
2(A+2)=B+2
2A+4=B+2
B-2A=2.................................REEMPLAZANDO B
A+3-2A=2..................A=1......POR LO TANTO B=4
Rspta. FRACCION 1/4