Me i do not know where to place the algebraic expressions

simplify each equation by adding like terms or multiplying parentheses out.

4(k+9) = 4*k + 4*9 = 4k + 36, so place 4(k+9) below 4k + 36

4k+9k = 13k, so place 4k+9k under 13k

3+4k+6 = 4k+9, so place 3+ 4k + 6 under 4k+9

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