exam Maths Puzzle Numerical Ability

How do I solve this equation for p?
log(p/(1-p))=-3.059

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exam Other Question

I am suppose to find the GCF for these sets but i don't understand can someone help me?


1. 12a^3b^2,18a^2b^3,6a^4b^4

2. (6y^2-3y)(y+7)
Could you please help me solve this system of equations?

5x+3y+z=-13
x-3y+2z=1
14x-2y+3z=-16