Question

Determine o valor de x na função linear y=1/2+5/2x quando y=3+x

a)3/2
b)-3/4
c)1/2
d)5/4
e)5/3

Answer 1

$y= \frac{1}{2} + \frac{5}{2} x \\ \\ se~~~y=3+x \\ \\ 3+x= \frac{1}{2} + \frac{5x}{2} \\ \\ mmc=2 \\ \\ 6+2x=1+5x \\ \\ 2x-5x=1-6 \\ \\ -3x=-5 \\ \\ 3x=5 \\ \\ x= \frac{5}{3}$

Letra E