Find the value of the variable

do not answer if you are unsure!
answer as many as you can !

1. −4x−3=−6x+9

x =
(type your answer as a number)

2.
41−2n=2+n

n =
(type your answer as a number)

3.
5x−7=−10x+8

x =
(type your answer as a number)

4.

7y+3=4y−18

y =
(type your answer as a number)