Lesson 3 of 4 · Grade 7 Mathematics

Algebraic expressions and linear equations

18 min

Simplifying with brackets

Multiply every term inside the bracket: 3(2x + 4) = 6x + 12.

  • 2(a + 3) + 4(a - 1) = 2a + 6 + 4a - 4 = 6a + 2

Factorising (common factor)

6x + 9 = 3(2x + 3)

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