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Isabeleceline14
@Isabeleceline14
January 2020
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Calcule o valor de X nas equaçoes de 1 grau
a]5+8=4x-3
b}9{5x+4}=6{7x-6}
c}3x+2=x -4
4 5
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LouisXV
Ola
a)
5 + 8 = 4x - 3
4x = 5 + 8 + 3
4x = 16
x = 4
b)
9*(5x + 4) = 6*(7x - 6)
45x + 36 = 42x - 36
45x - 42x = -36 - 36
3x = -72
x = -72/3 = -24
c)
(3x + 2)/4 = (x - 4)/5
5*(3x + 2) = 4*(x - 4)
15x + 10 = 4x - 16
15x - 4x = -16 - 10
11x = -26
x = -26/11
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a)
5 + 8 = 4x - 3
4x = 5 + 8 + 3
4x = 16
x = 4
b)
9*(5x + 4) = 6*(7x - 6)
45x + 36 = 42x - 36
45x - 42x = -36 - 36
3x = -72
x = -72/3 = -24
c)
(3x + 2)/4 = (x - 4)/5
5*(3x + 2) = 4*(x - 4)
15x + 10 = 4x - 16
15x - 4x = -16 - 10
11x = -26
x = -26/11