In which steps does the first mistake appear in simplifying expression -4(0.25b-2)-(7-b) +3/2(4b-2/3)

1: b+8-(7-b)+3/2(4b-2/3)

2: b+8-7-b+3/2(4b-2/3)

3: b+8-7-b+6b-6/5

4: 6b+1/5


A-step 1

B-step 2

C-step 3

D-step 4

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

i need a diagram

step-by-step explanation:

no