Solving Equations with Variables on Both Sides

What is the most important rule when solving equations?

• Always wash your hands.

• Whatever you do to one side of the equal sign, you have to do to the other.

• Pick the answer at random.

• Wait at least one hour after you eat.

When you are trying to UNDO subtraction, you should use...

• addition

• subtraction

• multiplication

• division

When you are trying to UNDO division, you should use...

• addition

• subtraction

• multiplication

• division

Solve the equation

 $2x+4=10+5x$  
What is the value of x?  

(Enter ONLY the number)

Solve the equation:
 $-3+5+6x=11-3x$  
What is the value of x?
(Write ONLY the number value)

Solve the equation:
 $4\left(3+x\right)+x=x+4$  
What is the value of x?
(Write ONLY the number value)

• No solutions

• Exactly ONE solution

• Infinitely many solutions

• No solutions

• Exactly ONE solution

• Infinitely many solutions