4 = -8 + x
x= 12
Solve:
2x + 5 = 11
x = 3
Solving Equations
x - 2 = 6
x = 8
Solving Equations
x + 3 + 3x = 7
x = 1
4x - 2 = 3x + 5
x = 7
Definition: an "unknown value"
What is a Variable?
x + 12 = 0
x= -12
-3x + 5 = 14
x= -3
Solving Equations
-5p + 1 = 6
p = -1
Solving Equations
5 + 5x - 1 = 29
x = 5
2(x - 4) = 5x + 4
x = -4
On the fifth day of Christmas what did my true love give to me?
Five golden rings
3 = -2 – x
x= -5
x/3+7 =10
x= 9
Solving Equations
2n+10 = 4
n = -3
Solve:
5(f+2) - 3f = 20
f = 6
x = 4
How many variable terms are in this expression?
4x + 3 - 9 - 9y + m
What is a "3"
Solve:
x/-3 =10
x = -30
(r+2)/4=12
r = 46
Solving Equations
5(m-3) = 4
m = 19/5
Solving Equations
14 = (3a + 6) + 2
a=2
x = 1
A fixed value
What is a "Constant"?
-16 = x+2
x= -18
(2x)/3=6
x= 9
Solving Equations
3(𝑥 − 9) = −3
x = 8
Solving Equations
-21 = 7(5k - 8)
k = 1
2(x-3) = 2x - 6
What is "infinitely many solutions"?
The number standing directly next to a variable, held by either multiplication or division.
Examples: 4x, -3y,
x/2
What is "Coefficient"?