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  • Usuário do Brainly
2013-11-18T23:24:25-02:00
X - 3x/5 = 16
(5x - 3x)/5 = 16
2x =  80
x = 40
1 2 1
2013-11-18T23:25:24-02:00
X - 3x/5 = 16
5x/5 - 3x/5 = 16
2x/5 = 16
2x = 16 x 5
2x = 80
x = 80 / 2
x = 40