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CAIE IGCSE Mathematics 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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