exam Maths Puzzle Numerical Ability

Please help me with this problem (solve the equation and show the steps). Thanks!!
14/(x^2-1)+1/(x-1)=3/x+1

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exam Other Question

Having a real hard time with this...please help!

Solve system of equation word problem but either addition method or substitution method.

6x+2y=8
y=-3x Solve by completing the square: x2 +2x−24 = 0