plz help'f.1 math

( 1 ) 22 - 3x = - 8x - 8

5x = - 30

x = -6

( 2 ) - 25 / 4 = 5 / - 2x

25 / 4 = 5 / 2x

20 = 50x

x = 2 / 5

( 3 ) Statement 1 : T ( - and - become + )

Statement 2 : F ( -q + p = p - q but not q - p )

Statement 3 : T ( - and - become + )

So ans : C

1. 22-3x=-8x-8


22+8=-8x+3x


30=-6x


x=-5


2. -25/4=5/-2x


(-25/4)*8=(5/-2x)*8


-50=-20x


x=50/20


x=5/2

3. Which of the following are true?

(1) -(-a)=a

(2) -q+p=q-p

(3) (-p)/(-q)=p/q

A.(1) and (2) only

B.(2) and (3) only

C.(1) and (3) only

D.All of the above

(1) -(-a) 正所謂負負得正 所以係=a

(2)-q+p 如果將個寫得好睇d呢 係會=p+q 就唔等於q-p

(3)(-p)/(-q) 再一次負負得正 所以係會=p/q

都講明左(2) 係錯的 咁得案當然就係 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC啦

1. 22-3x=-8x-8
5x=-30
x=-6
2. -25/4=5/-2x
50x=20
x=0.4
3. C(唔係太肯定)

1. 22-3x=-8x-8
5x=-30
x=-6
2. -25/4=5/-2x
50x=20
x=2/5
3. c