CAIE IGCSE Mathematics Extended E2.2.1 Simplify expressions by collecting like terms.

Practise collecting like terms in algebraic expressions, including terms with different letters and fractional coefficients.

Exam points

combine like m, n or x terms while keeping signs attached to each coefficient
use a common denominator before simplifying fractional algebraic terms

[Maximum number: 4]

(a)

Simplify.

[ 4 ]

(i)

3 m-5 n-4 m+8 n

[ 2 ]

(ii)

$\frac{4 x}{5}-\frac{3 x}{10}+\frac{2 x}{15}$

[ 2 ]

$\frac{19x}{30}$ final answer
M1 for $\frac{6\times4x-3\times3x+2\times2x}{30}$ oe

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