7ª ano dia 6/8/12

1)Resolva as equações

a) 6x = 2x + 16
b) 2x – 5 = x + 1
c) 2x + 3 = x + 4
d) 5x + 7 = 4x + 10
e) 4x – 10 = 2x + 2
f) 4x – 7 = 8x – 2
g) 2x + 1 = 4x – 7
h) 9x + 9 + 3x = 15
i) 16x – 1 = 12x + 3
j) 3x – 2 = 4x + 9
l) 5x -3 + x = 2x + 9
m) 17x – 7x = x + 18
n) x + x – 4 = 17 – 2x + 1
o) x + 2x + 3 – 5x = 4x – 9
p) 5x + 6x – 16 = 3x + 2x - 4
q) 5x + 4 = 3x – 2x + 4
r) ( x – 3) – ( x + 2) + 2( x – 1) – 5 = 0
s) 3x -2 ( 4x – 3 ) = 2 – 3( x – 1)
t) 3( x- 1) – ( x – 3) + 5 ( x – 2) = 18
u) 5( x – 3 ) – 4 ( x + 2 ) = 2 + 3( 1 – 2x)