One-Step +/-
Solve for x: x + 5 =9
What is x =4?
Solve for x: 6x = 42
What is x = 7?
Solve for n: 5n - 9 = 71
What is n = 16?
Solve for p: 2/3 * p - 7 = 17
What is p = 36?
Golden Rule for solving equations.
What you do to one side, you must do to the other!
Solve for w: w - 11 = 4
What is w = 15?
Solve for y: 1/3 * y = 18
What is y = 54?
Solve for x: 1/2 *x + 3 = 9
8x + 22 =94
What is x = 9?
What is the main goal when solving equations?
Isolate the variable.
Solve for t: -5 = t - 9
What is t = 4?
Solve for c: -8c = 72
What is c = -9?
Solve for y: 3y -4 =14
What is y = 6?
-15 = -4m + 5
m = 5
What kind of operations do we use when solving equations?
Inverse Operations
Solve for n: -49 + n = 63
What is n = 112?
Solve for y: -252 = -14y
What is y = 18?
Solve for x:
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
Solve for z: -4.2 = z + 2.1
What is z = -6.3?
Solve for c: 5/8 * c = -20
What is c = -32 ?
Solve for m: -4m -48 = 36
What is m = -21?
25+20/80 x=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.