A) 2 x + 6 = x + 18,sendo U=Q b) 5 x – 3 = 2
x + 9, sendo U=Z
c)
3 (2x-3) + 2 (x + 1) = 3x + 18, sendo U=N d) 2 (x + 1) – 3 (2x – 5) = 6x – 3,
sendo U=Q
x + 9, sendo U=Z
c)
3 (2x-3) + 2 (x + 1) = 3x + 18, sendo U=N d) 2 (x + 1) – 3 (2x – 5) = 6x – 3,
sendo U=Q
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