exam Maths Puzzle Numerical Ability

what is the answer to this problem x=3y-1 using the numbers -2,-1,0,1,2 as the numbers you are going to add or subtract

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exam Other Question

logx + log(x + 3) = 1

Can someone show me the steps to get the answer of x= -5 or 2?

Thanks polynomials- find the greatest common factor of the polynomial
15x+45x^2