Respostas

2014-02-15T20:27:48-02:00
X - y = 52

Pela regrinha de 3 temos:

x ------------------- 23
y ------------------- 19

23y = 19x

23/19 y = x

23/19y - y = 52

4y/19 = 52
4y = 52*19
y = 988/4
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y = 247
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x - y = 52
x - 247 = 52
x = 52 + 247
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x = 299
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