Rearrange the formula: m = 2ab/4c+b to make b the subject
m = 2ab/4c+b [times both sides by (4c+b)]
m(4c+b) = 2ab (expand the bracket)
4cm+bm = 2ab (take away bm from both sides)
4cm = 2ab - bm (take out b as the common factor)
4cm = b(2a-m) [divide both sides by (2a-m)]
4cm/(2a-m) = b
MU
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