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32+8
40
40 x 4
160
la propina de cris es 160
La cuarta parte de la propina = x/4
Resolvemos :
x/4 - 8 = 32
x/4 = 32 + 8
x/4 = 40
x = 40 * 4
x = 160
Solución : La propina es = 160