Respuesta:
Explicación paso a paso:
1.
a) 2+6+5/13 → 13/13
total=1
b) 2+6-5/13 → total → 3/13
2.
a) 1/3 +3/5+1/15 → 5+9+1 /15
15/15 → 1
b) 1/3 +3/5-1/15 → 5+9-1/15
13/15 →total
3.
a) 2/5+4/3+1/4 → 24+80+15/60
119/60 → total
b) 2/5+4/3-1/4 → 24+80-15/60
86/60 → total
4.
a) 1/3+4/3+2/18 → 1+4/3 + 1/9
5/3+1/9 → 15+1/9
16/9 → total
problema 3
3/5+2/6 =25/30+x
14/15=5/6+x
14/15-5/6=x
1/10=x
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Respuesta:
Explicación paso a paso:
1.
a) 2+6+5/13 → 13/13
total=1
b) 2+6-5/13 → total → 3/13
2.
a) 1/3 +3/5+1/15 → 5+9+1 /15
15/15 → 1
b) 1/3 +3/5-1/15 → 5+9-1/15
13/15 →total
3.
a) 2/5+4/3+1/4 → 24+80+15/60
119/60 → total
b) 2/5+4/3-1/4 → 24+80-15/60
86/60 → total
4.
a) 1/3+4/3+2/18 → 1+4/3 + 1/9
5/3+1/9 → 15+1/9
16/9 → total
problema 3
3/5+2/6 =25/30+x
14/15=5/6+x
14/15-5/6=x
1/10=x