What an equation is
An equation shows that 2 expressions have the same value.
Equation: a math sentence with an equal sign. Solution: the value of the variable that makes the equation true.
Watch the scale stay level
CAUTION: Do not change only 1 side of an equation. Do the same operation to both sides.
Try it
Get x alone and keep the scale level
- Pick an equation.
- Click the buttons to take blocks off the scale.
- Look at the scale after each click. Keep the scale level.
x + 5 = 9
Quick check
Answer 5 questions. You see your score at the end.