Question

-10(x + 1) ≤ -12x + 7

Answer 1

Okay this is what i got:

-10(x + 1) ≤ -12x + 7
-10x - 9 ≤ -12x + 7
-9 ≤ 2x + 7
-16 ≤ 2x
x = -8

Is that what you are looking for?

Answer 2

this is just like solving for x=something. get all the x on one side and everything else on the other. A few special rules are, if you multiply by a negative across the whole equation, then the inequality switches.

Answer 3

x doesn't equal -8!
\[\large x \ge -8\]

Answer 4

oh yeah i see what u mean but i got the -8 part right lol ^.^ thanks

Answer 5

:D

Answer 6

how did you get the -16

Answer 7

everything i do i dont get -16

Answer 8

see the -9 ≤ 2x + 7? okay, we subtract 7 from -9, which gives -9 - 7 which ends up adding instead of subtracting becuz they are both negative numbers. so just like 9 +7 = 16, but instead since they are both negative, it will be -9 - 7 = -16.

Answer 9

Get it?

Answer 10

I see a problem in the math from up above. it's -10x-10, not -10x-9...

Answer 11

you guys are really losing me

Answer 12

alright, step by step.
\[\huge -10x-10 \le -12x + 7\]
\[\large -10x \cancel {- 10 + 10} + 12x \le cancle{-12x} + 7 +10 \cancel{+12x}\]

Answer 13

Doh typo.. but you see what happens right?

Answer 14

how did the 12 come one th other side

Answer 15

added it on both sides. Just like solving for x.

Answer 16

s now its -10+12x ≤ -12+7+10

Answer 17

\[\large -10x+12x \le 7+10\]
It's this. you see where it says "cancle" ? that was my typo and it should have a line through the -12x.

Answer 18

x\[x \le17/2\]

Answer 19

-10(x + 1) ≤ -12x + 7
-10x -10+10+12x ≤cancel -12x +7+10+12x
-10x+12x≤7+10
-10x+12=2
7+10=17
2/17

Answer 20

@killswitch1811 don't just give answers...

Answer 21

x≤2/17

Answer 22

@amber517 Almost... you messed up on the math just a bit. start back on the line:
\[\large -10x+12x \le 7+10\]

Answer 23

if i do -10+7it give me -3

Answer 24

\[\large 12x - 10x \le 17\]\[\large 2x \le 17\]

Answer 25

i'm not getting it there becuase -10+7=-3

Answer 26

I think you've messed up on the math a bit. Do you wanna start from the beginning again?

Answer 27

yes thats fine with me

Answer 28

-10(x + 1) ≤ -12x + 7
-10x -10+10+12x ≤cancel -12x +7+10+12x
-10x+12x≤7+10
-10x+12=2
7+10=17
x≤2/17

Answer 29

we start off with:
-10(x + 1) ≤ -12x + 7

Multiply -10 through:
-10x -10 ≤ -12x +7

add 10 to both sides
-10x ≤ -12x +7 +10

add 12x to both sides
12x - 10x ≤ 7+10

Answer 30

12x-10x=2x

Answer 31

7+10=17

Answer 32

then you move the two over and that brings it to 17/2

Answer 33

Right! then divide by two and you'll have your finished inequality. :D

Answer 34

Good job!

Answer 35

ok thanks