Make b the subject of the formula 3b+8d=2ab+53b + 8d = 2ab + 5. Answer ...

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Worked solution

10

1. Collect the terms containing $b$ on the left and the remaining terms on the right.

3b+8d=2ab+53b+8d=2ab+5
3b−2ab=5−8d3b-2ab=5-8d

2. Factorise out $b$ and divide to make $b$ the subject.

b(3−2a)=5−8db(3-2a)=5-8d
b=5−8d3−2ab=\frac{5-8d}{3-2a}

Answer

b=5−8d3−2ab=\frac{5-8d}{3-2a}

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