4 = -8 + x
x= 12
6x – 13 = 11
x= 4
Solving Equations
4x + 3 = 7
x = 1
Solving Equations
x - 2 = 6
x = 8
How many operations does a one step equation have?
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
Solving Equations
-5p + 1 = 6
p = -1
When solving a two step equation how many terms are usually on the same side?
Two
In order to solve an equation what must you do to the operation to collect like terms?
The inverse or opposite
3 = -2 – x
x= -5
x/2 + 13 =-8
x= -42
Solving Equations
-45 = x + 4
x = -7
Solving Equations
2n+10 = 4
n = 2
Which of these are a multi step equation?
4x+3=11
-4x+2-7
5(y+2/5)=-13
4m+7m
5(y+2/5)=-13
What does the inverse of an operation mean?
The opposite of the given operation.
5x = -80
x= -16
x/2 + 5 =10
x= 10
Solving Equations
14 = (3a + 6) + 2
a=2
Solving Equations
5(m-3) = 4
m = 19/5
What do you do to the sign when adding negative numbers?
Add and keep the same sign
When solving something like 3(x -2) = 12
what step do you do first?
Expand the brackets
-16 = x+2
x= -18
x/3 - 6 = -3
x= 9
Solving Equations
-21 = 7(5k - 8)
k = 1
Solving Equations
3(𝑥 − 9) = −3
x = 8
What rule is ALWAYS applied when solving equations?
What you do to one side, you do to the other side.
A house painting company charges $376 plus $12 per hour. Another painting company charges $280 plus $15 per hour.
a. How long is a job for with both companies will charge the same amount?
b. What will the cost be?
a. 32 hours
b. $760