Foundation November 2017 Paper 3 Q12

AQACurrent spec3 marksSubstitution

12 \(a - b = 5\)

(a) Work out the value of \(\qquad 2(a - b)\) [1 mark]
(b) Work out the value of \(\qquad 7a - 7b\) [1 mark]
(c) Work out the value of \(\qquad b - a\) [1 mark]
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