Two Step Equations
3x - 18 = -12
x = 2
4(-2x - 3) = -28
x = 2
7x - 6 = 6x + 4
x = 10
A company is selling pens for 3 dollars each and a shirt for 10 dollars. You are allowed to puchase one shirt and as many pens as you want. Write an equation using y (total money spent) and x (the amount of pens purchased)
y = 3x + 10
Solve for y > 2x + 3y = 12
y = 2x / 3 + 4
5x - 11 = 14
x = 5
6(6k + 6) = -36
k = 0
12x - 3 - 5x = 6x + 8
x = 11
A fitness club charges $125 joining fee plus $45 per month. If Mr. Goodwin spent $800 to join the fitness club, how many months is his membership for?
15 months
Solve for I > P = IRT
P / RT = I
-7 = 5x + 21
x = -28 / 5
-24 = 3(n + 2) + 6
x = -12
9x - 4 + 8 = 6x - 13 + 10x
x = 17 / 7
A cell phone company charges $20 a month plus $3 per call. What is the equation using y (total money spent) and x (number of calls)
y = 3x + 20
x = -y + 6
x + ½ = 7/4
x = 5/4
¾(8x + 16) = 18
x = 1
2(x - 4) + 2x = 3 + 4x
no solution
John make 3 dollars per hour and has 20 saved in a bank. Penny spends $8 per hour and has $2 saved. Write an equation that would allow you to solve when John and Penny have the same amount of money.
3x + 20 = 8x + 2
Solve for y > -9x + 10y = 90
y = 9x / 10 + 9
13x - 12 = 29
x = 41 / 13
4(x + 2) - (x - 4) = 12
x = 0
10x - 10x + 8 = 50x - 50x + 8
infinite solutions
The sum of three consecutive number is 72. What are the three numbers?
23, 24, 25
Solve for 12 > 2x + 12 = 9y
12 = -2x + 9y