I need help with this ASAP I don’t understand it

1- b= 148 (180-32)

2- b= 76 (180-104)

3- b= 123 (180-57)

4- b= 83 (180-97)

5- x= 51 (180-78= 102) (102/2=51)

6- x= 46 (180-140= 40) (40+6=46)

7- x= 27 (180-108=72) (72-18=54) (54/2= 27)

This one is a bit longer:)

8- x= 28 (2x+4x+3+9= 180), (6x+12=180), (180-12=168), (168/6= 28)

Hope this helps! :)

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.