CAIE IGCSE Mathematics Extended Linear Equations

Review CAIE IGCSE Mathematics Extended linear equations through fraction clearing, bracket expansion, function equations and context-based modelling.

Exam points

form and solve a linear equation from perimeter, shop-cost or book-price contexts
clear fractions or brackets before isolating the unknown in an equation
combine function expressions such as f(x)+g(x)=0 into a linear equation

[Maximum number: 2]

Solve.
4x+15=9x=

-1.5 or $-1\frac12$ or $-\frac32$
M1 for 4x=9-15 or $x+\frac{15}{4}=\frac94$

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