Respostas

2013-08-30T06:43:52-03:00
A) 2x - 1\3\2 = 1\3 
2x - 1/6 = 1/3
2x = 1/3 + 1/6
2x = 2 + 1 / 6
2x = 3/6 :3
2x = 1/2
x = 1/2/2
x = 1/4

b) 3y - 2(y - y - 11\3) = -4 
3y - 2(-11/3) = -4
3y + 22/3 = -4
3y = -4 - 22/3
3y = -12 - 22 / 3
3y = -33/3 :3
3y = -11
y = -11/3

c) x - 3(x - x + 4\2) = 6
x - 3(4/2) = 6
x - 12/2 = 6
x - (12/2 :2) = 6
x - 6 = 6
x = 6 + 6
x = 12
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