GCSE Maths Practice: forming-equations

Question 10 of 10

This question tests forming equations from triangle angle relationships.

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\( \begin{array}{l}\text{Triangle with angles x, 3x, x+18. Find x.}\end{array} \)

Choose one option:

Translate words to algebra, sum angles, then solve.

Assign variables to angles, sum equals 180°, solve for smallest angle.