Resolva
3/x + 2/5 = 3/4
Explique.
Soluções para a tarefa
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31
mmc=20x
60+8x=15x
-7x=-60(-1)
x=60/7
outro jeito :
3/x + 2/5 = 3/4
3/x = 3/4 - 2/5
3/x = 15/20 -8/20
3/x = 7/20
x/3 = 20/7
x = 60/7
60+8x=15x
-7x=-60(-1)
x=60/7
outro jeito :
3/x + 2/5 = 3/4
3/x = 3/4 - 2/5
3/x = 15/20 -8/20
3/x = 7/20
x/3 = 20/7
x = 60/7
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