exam Maths Puzzle Numerical Ability

8x-y=17
6x+y=11

Find the value of the variables......

Please help, I keep coming up with a fraction.

Thank you!

Amanda

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exam Other Question

What do I solve this by factoring?

49x^2 - 14x - 3

Thanks! log(base 4)4x + 2log(base 4)x = 4 :solve for x.

A. 1
B. 2
C. 3
D. 4

This is a multiple choice question, and the answer i got was not one of the choices. Please help!