Question

combertir a heterogeneas 3/20 7/5 9/10 7/4 1/2

Answer 1

3/20= 6/40
7/5= 56/40
9/10= 36/40
7/4= 70/40
1/2= 20/40

Answer 2

Puedes convertir a todas(menos la primera)en denominador 20. 7/5x4:28/20 9/10x2:18/20 7/4x5:35/20 1/2x10:10/20