Respuesta:
A) 3/28
B) 1 3/10
C) 1 1/6
D) 17/45
Explicación paso a paso:
A) 6/7-3/4= 24-21/28 = 3/28
B) 4/5+ 4/8= 32+20/40=52/40 = 1 12/40 = 1 3/10
Alternativa
4/5+1/2= 8+5/10=13/10= 1 3/10
C) 8/12+2/4= 8+6/12=14/12 = 7/6 = 1 1/6
2/3+1/2= 4+3/6=7/6= 1 1/6
D) 7/9 - 2/5= 35-18/45= 17/45
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Respuesta:
A) 3/28
B) 1 3/10
C) 1 1/6
D) 17/45
Explicación paso a paso:
A) 6/7-3/4= 24-21/28 = 3/28
B) 4/5+ 4/8= 32+20/40=52/40 = 1 12/40 = 1 3/10
Alternativa
4/5+1/2= 8+5/10=13/10= 1 3/10
C) 8/12+2/4= 8+6/12=14/12 = 7/6 = 1 1/6
Alternativa
2/3+1/2= 4+3/6=7/6= 1 1/6
D) 7/9 - 2/5= 35-18/45= 17/45