Question

Can someone please explain on how to do these 4 problems ?
x - 3 > 2x -1
12x+9<2x−4
11x+14<3x-10
8x+7<7x-8

Answer 1

So first of all, you have to solve for the value of x.

Answer 2

so for the first one would I start like this:
x+2x>1+3

Answer 3

Not quite.

x -3 > 2x -1
-2x -2x

-x -3 > -1

Answer 4

check ur signs...
should be x - 2x > -1 + 3

Answer 5

-x<-1+3
-x<2
x>-2

Answer 6

Incorrect, note that you change the order of the > from how it is supposed to be.

Answer 7

-x > 2
x < -2

Answer 8

You must remember that the inequality signs must stay consistent.

Answer 9

i thought u change it when ever u move a negative

Answer 10

not when u move a negative...only when u multiply or divide by a negative

Answer 11

oh i see

Answer 12

for the second one would it be done like this:
12x+2x<-4-9
14x<-13
x<-0.93

Answer 13

Remember, when changing things, we need to subtract positives and add negatives to balance the equation

12x + 9 < 2x -4
-2x from both sides

10x + 9 < -4
-9 from both sides
10x < -13
divide by 10

x = -13/10

Answer 14

12x - 2x < -4 -9...ur setting it up wrong Kawaii

Answer 15

okay I see what I did wrong