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Algebra Review
Lesson 3
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Lesson 3: 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

−2+9⋅8−−10=80-2+9\cdot8--10=80

Checkpoint

Evaluate −2+3⋅7−−3\text{Evaluate }-2+3\cdot7--3

Recap

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