One-step equation
2x=6
x=3
2x+7=8
x=1/2 or 0.5
How old am I if 400 reduced by 2 times my age is 244?
400-2x=244
x=78 years old
2x+7x+5=3x-10
x=-2.5
-2x+6 >7 Show it on the number line
x < -1/2
2+x=7
x=5
0.5x+6=8
x=4
Leon sold half of his comic books and then bought sixteen more. She now has 36. With how many did he begin?
0.5x+16=36
x=40
3x-2x+10=4x+15
x=-5/3
x> 4x-7
-9=-7-x
x=2
0.33x-5=-6
x=-3.03 repeating
A video store offers two yearly pricing plans:
A. $10.00 charge plus $2.50 for each movie rented. B. $4.00 charge (total) for the first 4 movies rented plus $3.00 per movie.
How many movies will a person need to rent in order to spend an equal amount of money using either plan?
10+2.5x =4 + 3(x-4)
36 movies
2.5x-6x+3=4.5x+10
x =- 0.875 , x =-7/8
2x+6x < 5x -8
x<-8/3