Please Jawab pake cara ya, please banget!

1. -6+8x=4x-4
4x=2
x=1/2

3. 2x^2-6x=-4
x^2-3x+2=0
(x-2)(x-1)=0
x=2 v x=1

4. x^2-5x+16=2x+6
x^2-7x+10=0
(x-5)(x-2)=0
x=5  v   x=2