Solve
3x+9=12
X=1
|2x-4|=2
x=3, x=1
x+7>4
x>-3, open, to the right
x-5>0 or 3x-1<8
x>5 or x<3
|x-4|<7
x>-3 and x<11, open, towards each other
5(x+3)-4=10
x=-1/5 or -0.2
|-6+3|=27
x=-4, x=5
x-18>-15
x>13, open, to the right
3x+1<4 and -2x+2 < or equal to 8
x<or equal to -3 and x<1
closed and open
toward each other
|2k+1|>or equal to 9
k>or equal to 4 or k<or equal to -5, closed
to the left and to the right
2/3x-2=5
x=21/2 , 10.5, 10 1/2
|5-2x|-11=0
x=-3, x=8
3-(4m+1)>5m-25
equal to
3> or equal to m, closed and to the left
when do I use a bracket and when do I use parenthesis?
Bracket= closed circle and parenthesis when open circle or by an infinity
When I multiply or divide by a negative what happens to the sign
it flips
10-(8p+3)=9(2p-5)
p=2
-2|x-4|+3=1
x=5, x=3
3(x-4)< or equal to x-6
x<or equal to 3, closed, to the left
write x<-5 or x>15 in interval notation
(-infinity, -5) U (15, infinity)
When Im writing the second equation what happen to the signs and what happens to the number on the other side of the equal sign?
sign flips and you change the number to positive or negative depending what it is first.
3x-5/4=x+1/2
x=7
-7|9-2x|+9=-12
x=3, x=6
4+5(2w-10)/-2=x+7
w>5, open, to the right
write n<or equal to 13 and n>or equal to -1 in interval notation
9-2|4x+1|>3
x>4 and x<-1, open, towards each other