Respostas

2013-07-10T14:08:08-03:00
X + x + x/2 + x/3 + x/4 = 148

12 x + 12 x + 6x + 4x + 3x = 148

37x = 148

x=4
2013-07-11T00:37:02-03:00
x+x+\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=148\\\\\frac{12x+112x+6x+4x+3x}{12}=148\\37x=148*12\\37x=1776\\x=\frac{1776}{37}\\\\x=48

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