book Maths Puzzle Numerical Ability

determine an ordered pair solution that satissfies the following linear equations
2x-5=7y+3x

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book Other Question

10x^4+27x^3+52x^2+45x=28 divided by 2x^2+3x+4 Solve each problem by using a quadratic inequality.
Profitable fruitcakes. Sharon's revenue R (in dollars) on the sale of x fruitcakes is determined by the formula R = 50x - x^2.