exam Maths Puzzle Numerical Ability

8-|4+9|+2

-3+3x|-5-2|+6

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exam Other Question

Your teacher is giving you a test worth 100 points containing 40 questions. There are 2-point and 4-point questions on the test. How many of each type of question are on the test? Can someone help me on the following problems. I would greatly appreciate it.
Thank you

x+3/x+6=x-5/x+2

x/x-1+5/x+1=3x/x^2-1

7/x-4+1/x+4=-5x/x^2-16