Answer:
Qn 10:
x + 2x = 18
3x = 18
x = 6
LM = 6
Qn 12:
Drawing a sketch of the positioning of the points will help greatly.
3x + x =20
4x = 20
x = 5
Substitute x = 5 into AB and BC to find values
AB = 3 x 5 =15
BC = 5
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