Question

RESOLVA AS EQUAÇÕES? A)x+1/2= 2+x/4 B)2(2 X - 2) =2/3 C)3(2 X + 3) = 9X D) 3/X+4/9=5/12 E) 3/X - 1=3/2

Answer 1

A) x + 1/2 = 2 + x/4
mmc = 4
4x + 2 = 8 + x
4x - x = 8 - 2
3x = 6
x = 6/3
x = 2
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B) 2(2x - 2) = 2/3
4x - 4 = 2/3
mmc = 3
12x - 12 = 2
12x = 2 + 12
12x = 14
x = 14/12
x = 7/6
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C) 3(2x + 3) = 9x
6x + 9 = 9x
6x - 9x = -9
-3x = -9 (*-1)
3x = 9
x = 9/3
x = 3
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D) 3/x + 4/9 = 5/12
mmc = 36x
108 + 16x = 15x
16x - 15x = -108
x = -108
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E) 3/x - 1 = 3/2
mmc = 2x
6 - 2x = 3x
-2x - 3x = -6
-5x = -6 (*-1)
5x = 6
x = 6/5

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