Calcule as equações
a) 3x - 15 = 0
b) 2x + 3x + 25 = 10
c) 5x - 1 + x 9 = 3
d) 2/3x + 15 - x = 8
e) 2x + x - 1 = 10
a) 3x - 15 = 0
b) 2x + 3x + 25 = 10
c) 5x - 1 + x 9 = 3
d) 2/3x + 15 - x = 8
e) 2x + x - 1 = 10
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Resposta:
a) x = -5
b) x = -5
c) x = 5
d)x =21
e) x = 11