Resposta :

x - x/5 = 32       m.m.c = 5
5x/5 - x/5 = 160/5

5x - x = 160
4x = 160
x = 160/4
x = 40
x - (1/5)x = 32
x - x/5 = 32
5x - x = 160
4x = 160
 x = 40 

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