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Algebra Review
Lesson 7
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Lesson 7: Mixed Algebra Review

Coordinate simplification, substitution, and operation order.

Review problems mix multiple skills. Start with structure recognition, then apply operation rules in the correct sequence.

Key formula

a+b⋅d−c⇒a+(bd)−ca+b\cdot d-c\Rightarrow a+(bd)-c

Worked example

4+−11⋅6−−5=−574+-11\cdot6--5=-57

Checkpoint

Evaluate 3+6⋅4−−9\text{Evaluate }3+6\cdot4--9

Recap

  • - Spot operation precedence before computing.
  • - Rewrite difficult forms into smaller chunks.
  • - Validate by reverse substitution when possible.
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