exam Maths Puzzle Numerical Ability

Solve each of the following systems by substitution.
McGraw Hill 6th edition, 8.3 # 28.
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4x-12y=5
-x+3y=-1

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exam Other Question

Find each product. #58

(3y - 13)(y - 3)
Need help with homework problems.

Simplify fractions
5x + 2y/35x + 14y
x^2 - 5x - 14/2^x2 - x- 10

Multiply
x^2 - x - 20.x^2 + 7^x + 10/x^2 - 3x - 10. x^2 + 4x - 5

4x^2