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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