This grammar is supposed to give priority to multiplication:

• E -> E + T | T.
• T -> T * F | F.
• F -> x.

A derivation for "x + x * x" would be (unless I'm wrong):

E => E + T => T + T => F + T => x + T => x + T * F => x + F * F => x + x * F => x + x * x.

So how is multiplication given priority over addition? It appears that the addition is produced first.