Save guides, add subjects and pick up where you left off with your BBC account. Algebra uses letters and symbols in the place of numbers and can be used to simplify expressions. Algebraic notation ...
MARY:Right. 200g of self-raising flour, 175g of butter, 2 eggs. 225g of Caster sugar, 40g of cocoa powder, one teaspoon of vanilla extract and the cream, 150ml. MARY:'If two quantities arein direct ...
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