Z podanych równań wyznacz x . a)2x - y = 5 b)1/3y = x - 3 c) 3 ( x-y ) = 2x d)2/3x = 3/4y e)4x + 2y = 1 f)6x - 2/3y = 2

a)2x - y = 5 2x=5+y/:2 x=5/2+1/2 y b)1/3y = x - 3 -x=-3-1/3y/:(-1) x=3+1/3y c) 3 ( x-y ) = 2x 3x-3y=2x 3x-2x=3y x=3y d)2/3x = 3/4y/:3/2 x=9/8y e)4x + 2y = 1 4x=1-2y/:4 x=(1-2y):4 f)6x - 2/3y = 2 6x=2+2/3y/:6 x=1/3+1/9y

a)2x - y = 5 2x=y+5 x=(y+5)/2 b)1/3y = x - 3 x= ⅓y +3 c) 3( x-y ) = 2x 3x-3y=2x x=3y d)2/3x = 3/4y /obustronnie * 3/2 x=9/8y e)4x + 2y = 1 4x=1-2y x=(1-2y)/4 f)6x - 2/3y = 2 6x= ⅔y +2 x= (⅓y + 1)/3