anonymous one year ago can someone explain this to me?

1. anonymous

are you trying to solve for m?

2. anonymous

yes theres some options a. m = 4 b. m = 2 c. m = 6 d. m = -2

3. anonymous

ok well here you should start by distributing the -4 so -4*-3m = 12m and -4 *(-2) = 8 which means you now have 12m+8=32

4. anonymous

you can subtract 8 from both sides like this 12m +8 -8 = 32 - 8

5. anonymous

so now you have 12m=24 and now you can divide 12 from both sides

6. anonymous

$\frac{ 12m }{ 12 } = \frac{ 24 }{ 12 }$ leaving you with m = 24/12

7. anonymous

which is 2

8. anonymous

? i believe

9. anonymous

it's like the circle question you did when you had to move the 2π around

10. anonymous

yes

11. anonymous

yeah i think they are all the same these just confuse me

12. anonymous

once you get the hang of rules of algebra you'll have no issues with this stuff. :)

13. anonymous

just always remember "What you do to one side of an equation you must do to the other side."

14. anonymous

i hope! theres a couple like this do you mind?

15. anonymous

cause i kind of get it but then when i'm left to do it alone I have no idea

16. anonymous

go for it

17. anonymous

What is the solution to -(-5 - 6x) = 4(5x + 3)? Select one: a. x = -2 b. x = -1/2 c. x = 2 d. x = 1/2

18. anonymous

oh!! i remember dat one, x= -1/2, right teehee|dw:1444597877958:dw|

19. anonymous

-(-5 - 6x) = 4(5x + 3)$(-1)(-5-6x) = 5+6x$$4(5x +3) = 20x+12$ from here you now have 5+6x = 20x +12 you want to get all the x terms on one side and all the non x terms on the other so it becomes 6x-20x = 12-5 which when combined is -14x = 7 now divide -14 from both sides and you'll have $x = -\frac{ 7 }{14 }$

20. anonymous

simplify and you will have $x = -\frac{ 1 }{ 2 }$