Explicación paso a paso:
a)2x+16=42
2x=42-16
2x=26
b)
[tex] \frac{3x}{4} - 18 = 12[/tex]
3x-72/4=12
3x-72=48
3x=120
x=40
c)
[tex] \frac{1}{4} x = 20[/tex]
x=80
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Explicación paso a paso:
a)2x+16=42
2x=42-16
2x=26
b)
[tex] \frac{3x}{4} - 18 = 12[/tex]
3x-72/4=12
3x-72=48
3x=120
x=40
c)
[tex] \frac{1}{4} x = 20[/tex]
x=80