One-Step +/-
6x = 42
What is x = 7?
2x+3+4x-5
what is 6x-2?
5n - 9 = 71
What is n = 16?
p/3 - 7 = 17
What is p = 72?
Golden Rule for solving equations.
What you do to one side, you must do to the other!
w - 11 = 4
What is w = 15?
9p+7p+5-3
what is 2p+2?
x/2 + 3 = 9
What is x =12?
8x + 22 =94
What is x = 9?
What is the main goal when solving equations?
Isolate the variable.
y/3 = 18
What is y = 54?
8x2-5x-4-x2+x
What is 7x2-4x-4
3y -4 =14
What is y = 6?
-15 = -4m + 5
m = 5
What kind of operations do we use when solving equations?
Inverse Operations
-49 + n = 63
What is n = 112?
8a+15a+8-2a-1
What is 21a+7?
5x - 5 = 40
x = 9
x/4 - 8 = 2
x = 40
331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?
54 students were on each bus
-252 = -14y
What is y=18?
7n2-3-9n2+2n+1
What is -2n2+2n-2?
-4m -48 = 36
What is m = -21?
25+x/4=26
What is x=4?
You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost?
Each eraser cost $5.