Question

help and look

Answer 1

6 - a = 1/3(9a - 18) -- distribute through the parenthesis
6 - a = 3a - 6 -- subtract 3a from both sides
6 - a - 3a = -6 -- subtract 6 from both sides
-a - 3a = -6 - 6 -- combine terms
-4a = -12
a = -12/-4
a = 3

no need to go further....when it ends in " a = something " or " x = something " then there is only 1 solution. So the answer is A

Answer 2

u rock can u help me with 4 more plz

Answer 3

ask away :)

Answer 4

cool i will tag u so i can also medal u

Answer 5

I am not worried about medals...you can ask the q right here if you want

Answer 6

cool because my computer is slow

Answer 7

4x + 2(x - 3) = 8x + 12
4x + 2x - 6 = 8x + 12
6x - 6 = 8x + 12
this will end up with only 1 solution

Answer 8

so A again

Answer 9

yes

Answer 10

cool here

Answer 11

4(2x - 3) - 4x = 8x - 12 - 4x = 4x - 12...it is A

Answer 12

it said chose exactly two

Answer 13

wait...I read it wrong...give me a sec

A is not 1 solution...it is infinite solutions...so not A
4x - 12 = 3x - 4 -- one solution for B

4x - 12 = 3(2x - 6)
4x - 12 = 6x - 18 --- one solution for C

4x - 12 = 4(x - 5)
4x - 12 = 4x - 20 --- 0 solutions for this one...so it is not D

answers are : B and C

Answer 14

sorry about that :(

Answer 15

its cool
okay one last one are u ready i am very bad at this

Answer 16

i will be right back i got to use the restroom

Answer 17

identity equation is where there is infinite solutions.
contradiction equation means there is no solutions.

8x + 24 = 2(4x + 12)
8x + 24 = 8x + 24 --- infinite solutions....identity

5x + 18 - x = 2(2x + 8)
4x + 18 = 4x + 16 .... no solution....contradictory

7(3x - 2) = 20x - 13
21x - 14 = 20x - 13 -- one solution......neither

3x + 2(x - 10) = 5(x - 4)
3x + 2x - 20 = 5x - 20
5x - 20 = 5x - 20.....infinite solutions....identity

Answer 18

tag me if you need more help :)