Question

Se /2x - 3/=1/4,então x vale :
a)13/8
b)-7/8
c)13/8 ou 11/8
d)11/8 ou 3/8
e)n.d.a

Answer 1

$2x-3= \frac{1}{4} \\ \\ 2x-3=- \frac{1}{4} \\ \\ \\ 2x= \frac{1}{4} +3 \\ \\ 2x= \frac{1+3.4}{4} \\ \\ x= \frac{1+12}{4}= \frac{13}{4}$

$2x-3=- \frac{1}{4} \\ \\ 4.2x-4.3=-4. \frac{1}{4} \\ \\ 8x-12=-1 \\ \\ 8x=-1+12 \\ \\ 8x=11 \\ \\ x0 \frac{11}{8}$

Letra c)