Urgent! ! Which expert can solve equations in 8 math problems? I want this process

1. Just add and subtract. 7.05x=2 1.5 x=3。

2 36 x = 0 x = 36

3 x squared+0.2x-1.2 = 0 (x+1.2) x (x-1) = 0.

X=- 1.2 or x= 1.

4 Remove the brackets and move to get the square of 4x+8x-21= 0 (2x-7) (2x+3) = o.

X=3.5 or x=- 1.5.

5 Support 3x+6=4x+4 x=2.

6 tidy up, 18+6=2x+4x x=4.

7 wants to add 5x=25 x=5.

8 want to add 7.5x= 15 x=2.

The weak one asked, are you a pupil?