book Maths Puzzle Numerical Ability

Frederique is two years older than her brother. Twelve years ago she was twice as old as he was. How old are they now?

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book Other Question

Solve using the factoring method- place quation in standard form befor factoring

9x^2 + 4x + 1 = 10x

Not sure where to go with this one
15x-3y=7 find slope