exam Maths Puzzle Numerical Ability

From daughters [age 14] schoolbook with no ISBN.
x+1 over 3 = -x over 6

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exam Other Question

Assuming no denominator equals 0 and that x and y are intergers greater than 1, simplfy the following fraction: yxsquarem over ym-1n Help!
Write an equation of the line containing the given point and parrallel to the given line. Express your answer in the form y=mx+b.
(4,9);x+7y=5