1 Step to Equality
Equality in 2 Steps
1 Step to Inequality
Inequality in 2 Steps
Word to your mother.
100
Solve the equation
n - 5 = -20
n = 15
100
Solve the equation
2n - 12 = -30
n = -9
100
Solve and graph on a number line
n - 12 > -11
n > 1
100
Solve and graph on a number line
5n - 3 > 12
n > 3
100
Write the word sentence as an equation or inequality
Twice a number "n" less 5 is 13
2n - 5 = 13
200
Solve the equation
n + 8 = -18
n = -26
200
Solve the equation
5-n/3=4
n = 3
200
Solve and graph on a number line
n + 7 > -18
n > -24
200
38 > -4 - 7n
-6 < n
200
It cost $20 to enter Coughlin's Mega Awesome Gaming Zone and 65 cents per credit. You have $144, how many credits can you buy? Write and solve an equation.
124 credits
300
Solve the equation
-4n = -24
n = 6
300
Solve the equation
-12(n + 4) = 36
n = -7
300
Solve and graph on a number line
-9n<=72
n>=-8
300
Solve and graph on a number line
n/-5-8>=-10
n<=10
300
The mean money gain Mr. Coughlin received over 7 days of day trading was -250 dollars. Write an solve an equation to find the total change over the 7 day period.
-1750 dollars
400
Solve the equation
n/-3=5
n = -15
400
18n + 5 - 7n - 9n = 7
n = 1
400
Solve and graph on a number line
m/-4<-1
m > 4
400
Solve and graph on a number line
-5(n-4)<=25
n>=-1
400
The table shows the number of cookies ate by Mr. Coughlin over a 5 day period. For what values of n will he have a mean of at the most 50?
0 cookies
500
Solve the equation
34 = -14 + n
n = 48
500
-5(n + 9 - 3n) = -25
n = 2
500
Solve and graph on a number line
-4 + n < -4
n < 0
500
(-2n-8)/-4>0
n > -4
500
Identify the error, explain your reasoning and show the correct way to solve it.
-4x + 8 < 40
-8 -8
-4x < 32
divide both sides by -4
x > -8
there is no error.