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ChoiDudaPark
@ChoiDudaPark
November 2019
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Resolva as seguintes equações:
A) 2x-7/5 = x+2/3
B) 3(x - 5)/6 + 2x/4 = 7
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lelunardi1
A) 2x-7/5 = x+2/3
2x -x = 2/3 + 7/5
x = 2/3 + 7/5 mmc 15
x = 15:3.2 + 15:5.7
x = 5.2 + 3.7
x = 10 + 21
x = 31
B) 3(x - 5)/6 + 2x/4 = 7
3.x - 3.5 /6 + 2x/4 = 7
3x -15/6 + 2x/4 = 7
3x +2x/4 = 7 + 15/6 mmc 12
12.3x + 12:4.2x 12.7 + 12:6.15
--------------------- = --------------------
12 12 agora descarte os denominadores
12.3x + 12:4.2x = 12.7 + 12:6.15
4x + 3 . 2x = 84 + 2.15
4x + 6x = 84 + 30
10x = 94
x = 94/10
x = 9,4
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2x -x = 2/3 + 7/5
x = 2/3 + 7/5 mmc 15
x = 15:3.2 + 15:5.7
x = 5.2 + 3.7
x = 10 + 21
x = 31
B) 3(x - 5)/6 + 2x/4 = 7
3.x - 3.5 /6 + 2x/4 = 7
3x -15/6 + 2x/4 = 7
3x +2x/4 = 7 + 15/6 mmc 12
12.3x + 12:4.2x 12.7 + 12:6.15
--------------------- = --------------------
12 12 agora descarte os denominadores
12.3x + 12:4.2x = 12.7 + 12:6.15
4x + 3 . 2x = 84 + 2.15
4x + 6x = 84 + 30
10x = 94
x = 94/10
x = 9,4