Question

I can't understnad the work to solve the comPound Inequalities !! :/

Answer 1

3x + 4 > 16 or -2x + 7 > 9.
i don't know where should i start

Answer 2

Split it up into two separate problems
3x + 4 > 16
-2x + 7 > 9.
Now solve each for x

Answer 3

3x+4>16
start by subtracting 4 from both sides
16-4=?

Answer 4

12?

Answer 5

ugh.. what else i'm stuck on this problem almost for an hour

Answer 6

12 is right
3x>12
divide both sides by 3

Answer 7

you mean 12/3??
i got 4
O_o wait do i write now x<4??

Answer 8

12/3=4 so yes you have it correct
Now do this one
-2x + 7 > 9.
subtract 7 from both sides
9-7=?

Answer 9

2

Answer 10

3x + 4 > 16

first add -4 to both sides
3x+4 -4 > 16 + -4
and simplify
on the left side 4-4 is 0
on the right side 16-4 is 12
so you get
3x > 12

now divide both sides by 3
\[ \frac{3}{3}x > \frac{12}{3} \]
now simplify. 3/3 is 1 and 1*x is x
also, 12/3 is 4
so you get

x > 4

notice the "big" side of > is next to the x and the little end of > is next to the 4
that means x is bigger than 4
in other words, all numbers bigger than 4

Answer 11

-2x>2
divide both sides by -2
-2/-2=1
so x
2/-2= ?

Answer 12

Can you try working on
-2x + 7 > 9

what should you do first

Answer 13

like pooja said i i should divide?? :/

Answer 14

We subtracted 7
after that we divide to isolate the x

Answer 15

yea..okayii since you divided 2 y 2 i got -1