What you learned before
What are the order of operations?
Parentheses, exponents, multiplication/division, addition/subtraction.
x - 18 = -5
x = 13
Solve for the missing variable:
2x- 1 = 3
x = 2
Solve for the missing variable:
x + 4 = 2x
x = 4
In PEMDAS, what do you look for first?
Parentheses
Solve for the missing variable:
11 + x = 4
x = -7
Solve for the missing variable:
2x + 5x = 49
x = 7
Solve for the missing variable:
2x + 3 = 9
x = 3
Simplify the expression:
4(2x - 3)
8x - 12
Solve for the missing variable:
5x = 75
x = 15
Solve for the missing variable:
2 - 3x = 17
x = -5
Solve for the missing variable:
-3x - 4 = 5x + 28
x = -4
Simplify the expression:
2(x - 4) + 9 - 4x
-2x + 1
Solve for the missing variable:
x/3 = 9
x = 27
Solve for the missing variable:
23 + x/2 = 25
x = 4
Solve for the missing variable:
1 - 3x = -3x + 2
No solution
Simplify the expression:
1 +7 * 3^2 - 20
44
Solve for the missing variable:
x/3 = 3
x = 9
Solve for the missing variable:
10X - 5 = 45
x = 5
Solve for the missing variable:
1/4(4 - 8x) = -2x + 1
Infinite Solutions