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 each operation to isolate the variable term and later variable?
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?
Distribute the 3
-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 (A) charges $376 plus $12 per hour. Another painting company (B) charges $280 plus $15 per hour.
a. Which company charges more for 16 hours of painting?
b. Which company charges more for 48 hours of painting?
a. Company B
b. Company A