6x4=8xn
how do i solve this equation

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?