Worked examples
Two examples
Example 1
Solve: 4x = 28
- x is multiplied by 4. Undo it by dividing both sides by 4.
Answer: x = 7
Example 2
Solve: x3 = −5
- x is divided by 3. Undo it by multiplying both sides by 3.
Answer: x = −15
Where this is taught: Algebra Practice 1, “14. Sharing and multiplying”
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.