exam Maths Puzzle Numerical Ability

Could someone please help?
The selling price for one computer keyboard is $17.00. The total cost (in dollars) to produce x keybords is give by C(x)=6x+40. Assuming the keyboard ma

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I need to check my answer:

Solve the equation:
x/2x+2= -2x/4x+4 + 2x-3/x+1

Thank you again what is the complete solution to the equation /3-6x/=15? can someone please help me with this the multiple choices i have are

A.x=-2;x=-3
B.x=2;x=3
C.x=2;x=-3d
D.x=2;x=3d
E.x=-2;x=3