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Drika341
@Drika341
December 2019
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Resolva as equações a seguir, sendo U = Z
façam os cálculos prfv!!
a)2x + 3= 9
b)-3x + 5= x + 1
c)6x = -x + 16
d)9x - 9 + 3x= 15
e)5x + 4= 3x - x + 3
f)7x + 8 - 3x= 20 - 4x + 1
alguém pode me ajudar?
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Mike234
A) 2x + 3 = 9 c) 6x = -x +16 e) 5x + 4 = 3x -x + 3
2x = 9 + 3 6x + x = 16 5x - 3x + x = + 3 - 4
x = 12/2 7x = 16 3x = -1
x = 6 x = 16/7 x = -1/3
b) -3x + 5 = x +1 d) 9x -9 +3x = 15 f) 7x + 8 - 3x = 20 -4x + 1
-3x -x = +1 - 5 12x = 15 +9 7x -3x + 4x = 20 + 1 -8
-4x = -4 12x = 24 8x = 13
x = -4/-4 x = 24/12 x = 13/8
x= 1 x = 2
3 votes
Thanks 1
Drika341
ta meio embolado mais tdo bem...obgd
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2x = 9 + 3 6x + x = 16 5x - 3x + x = + 3 - 4
x = 12/2 7x = 16 3x = -1
x = 6 x = 16/7 x = -1/3
b) -3x + 5 = x +1 d) 9x -9 +3x = 15 f) 7x + 8 - 3x = 20 -4x + 1
-3x -x = +1 - 5 12x = 15 +9 7x -3x + 4x = 20 + 1 -8
-4x = -4 12x = 24 8x = 13
x = -4/-4 x = 24/12 x = 13/8
x= 1 x = 2