Math Problem Statement

simplify each expression:7. (5ab + ac − 9bc) + (−ab + 10ac + 4bc)

  1. (7k2m − 3km2 + 2km) − (3k2m − km2

− 11km)

  1. (−12r2s + 2rs2 + 6rs) − (3r2s + 8rs2

− rs)

  1. (6wx + 5wz − 2xz) + (−7wx + 12wz − xz)

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Simplification of Expressions
Combining Like Terms

Formulas

Distributive Property
Combining Like Terms

Theorems

Commutative Property of Addition
Associative Property of Addition

Suitable Grade Level

Grades 7-9

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