Respostas

2014-08-26T16:12:58-03:00
X + 23 = 110             
x = 3y  + 18

3y + 18 + y = 110
4y = 110 - 18
 y = 92/4
y = 23

x + 23 = 110
x = 110 - 23
x = 87




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