Intro to Solving Equations Opposite Operations

What is the first step to solve the following equation: x/2 - 3 = 1

• Add 3 on both sides

• Subtract 3 from both sides

• Multiply by 3 on both sides

• Divide by 3 on both sides

How many methods did we discuss in class yesterday about solving two-step equations?

• 1

• 2

• 3

• 4

When you're solving an equation, you have to undo the order of operations in the original problem by...?

• Working backwards

• Working in the same order as the original problem

• Working in the opposite order as the original problem

• Guessing until you get it right

Finish the sentence by using your notes: "A solution is _________."

• a value for the variable that makes the equation true.

• a variable for the value that makes the equation true.

• a value for the equation that makes the variable true.

• a variable for the equation that makes the value true.

• x=3

• x=2

• x=-2

• x=1

• 2

• -2

• 8

• 8

• m=3

• m=-4

• m=-1

• All real numbers

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides of the equation

• Subtracted 9 from both sides of the equation

• Multiplied both sides of the equation by 3

• Added -3 to both sides of the equation

What is the value of t that satisfies the equation?

• 10
  

• 11

Todd divided both sides of the equation below by 5.

5x = 2

Which other operation would have produced the same result?

• subtracting 2 from both sides

• subtracting 5 from both sides