We can substitute the variables, so we only have to solve for one, per eqaution [tex]x=4y[/tex] Therefore... [tex]3x-2y=20[/tex] Is also equal to.. [tex]3(4y)-2y=20[/tex]
Solve for y. Combine Like terms. [tex]12y-2y=20[/tex] [tex]10y=20[/tex] Divide both sides by 10. [tex](10y)/10=(20)/10[/tex] Simplify. [tex]y=2[/tex]
Now we can use the value of y to solve the other equation. [tex]x=4y[/tex] Is also equal to... [tex]x=4(2)[/tex]
