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Anna: 6 bananas. Ben: 6*2.5 = 15 bananas. Callum: (6+15)/3 = 7 bananas Altogether they have 6 + 15 + 7 bananas = 28 bananas

In these situations, we can use an acronym called "BIDMAS". BIDMAS stands for: "brackets", "indices", "division", "multiplication", "addition" a...

Have you seen anything like this before? 

What do you understand by this equation? 

How do you expand brackets? Grid/smiles and eyebrows 

How confident are you with factors and times ...

Unlike if we had just x in the numerature, here the chain rule will do us no good.  Integration by parts in this case also is little help - we end up with expressions at least as difficult as we started w...

Rearrange the first equation to give b as the subject.

b = 16 - 6a

Then substitute that equation for b into the second equation.

5a - 2(16 - 6a) = 19

Simplify this equation (re...