Respostas

2014-02-04T15:29:42-02:00
A) 2x = 7 + 1 -> 2x = 8 -> x = 4
b) x = 14 +8 -> x = 22
c) 3x = 23 + 4 -> 3x = 27 -> x = 9
d) x = 15 - 7 -> x = 8
e) x = 20 - 6 -> x = 14
f) 4x = 32 - 4 -> 4x = 28 -> x = 7
g) x = 12 + 5 -> x = 17
h) 2x = 31 - 15 -> 2x = 16 -> x = 8
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2014-02-04T15:35:35-02:00
A)2x=7+1,x=8/2,x=4;b)x=14+8,x=22;c)3x=23+4,x=27/3,x=9;d)x=15-7,x=8;e)x=20-6,x=14;f)4x=32-4,x=28/4,x=7;g)x=12+5,x=17;h)2x=31-15,x=16/2,x=8
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