Step-by-step explanation:

3x-23y=12

3x+y=8 or 3x=8-y

substitute:

(8-y)-23y=12

8-24y=12-8

-24y=4

y= -⅙

substituting the value of y to get the value of x

3x+(-⅙)=8

3x=8+⅙

3x=49/6

x=49/6/3

x= 49/18

check mo nalang, substitute mo lang, pero na check ko na yan