Question

Dada equação 4x + y/2 =6, calcule o valor de x
considerando os
seguintes valores de y.
a)y=0
b)y=12
c)y=-14
dy=-4,4​

Answer 1

equação geral:
4x + y/2 = 6
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a)
4x + 0/2 = 6
4x + 0 = 6
4x = 6

x = 6/4 ou 1,5
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b)
4x + 12/2 = 6
4x + 6 = 6
4x = 6 - 6
4x = 0

x = 0/4 ou 0
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c)
4x + (—14/2) = 6
4x + (—7) = 6
4x - 7 = 6
4x = 6 + 7
4x = 13

x = 13/4 ou 3,25
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d)
4x + (-4,4/2) = 6
4x + (-2,2) = 6
4x - 2,2 = 6
4x = 6 + 2,2
4x = 8,2

x = 8,2/4 ou 2,05