One-Step Equations
4 = -8 + x
x= 12
6x – 13 = 11
x= 4
Solving Equations
4x + 3 = 7
x = 1
Write an equations that best suits the following scenario:
You have a pack of crayons and give your friend 13 of them and you were left with 11.
x-13=11
What is the 4 Basic Operations?
Add, Subtract, Multiply and Divide
x + 12 = 0
x= -12
3x + 5 = 14
x= 3
Solving Equations
4 + 5x = 29
x = 5
Write an equations that best suits the following scenario:
Sam and Luis played in a basketball game and together they scored 28 points. If Sam scored 13 points how many did Luis score?
13+L=28
In order to solve an equation what must you do to cancel out a number
The inverse or opposite
3 = -2 – x
x= -5
x/2 + 13 =-8
x= -42
Solving Equations
-45 = x + 4
x = -7
Write an equations that best suits the following scenario:
A pizza place charges $4 per pizza as well as a $16 delivery fee. You placed an ordered and were charged $96. Let p represent the amount of pizzas ordered
4p+16=96
What are two things an equations needs to have?
equal sign and variable
5x = -80
x= -16
x/2 + 5 =10
x= 10
Solving Equations
14 = (3a + 6) + 2
a=2
Write an equations that best suits the following scenario:
A cup of coffee is 180 degrees and it is losing heat at a rate of 4 degrees per minute. How long will it take for the coffee to reach a temperature of 70 degree (let m represent # of minutes)
180-4m=70
When solving an equation what Procedure do you do in reverse?
Order of Operations or PEMDAS
-16 = x+2
x= -18
x/3 - 6 = -3
x= 9
Solving Equations
-21 = 7(5k - 8)
k = 1
Write an equations that best suits the following scenario:
Carl is making 11 bouquets of flowers. In each bouquets there are 6 roses and some amount of daisy's . He is using a total of 135 flowers. How many daisy's are in each bouquet. (let d represent # of daisy's)
11(6+d)= 135
When solving something like 3(x -2) = 12
what step do you do first?
Expand the brackets