exam Maths Puzzle Numerical Ability

I need help with this problem -3x < -6 or x + 5 < -2

The second symbol was supposed to be greater than equal to, I just couldn't make the symbol.

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exam Other Question

Solve for x:
(A.) Log(base 5)7 + log(base 5)8 = log(base 5)(2x-4)

(B.) Log(base 3) (x+1) - log(base 3) x = log(base 3) 15

(C.) (3/4)log(base 10) 10,000 = x problem is 3 over x-2 + 21 over x^2 -4 = 14 over x+2.

GCD is (x+2)(x-2), I think; and all of the numerators have to be multiplied by it. Then I get 24x + 48 = 14x - 28, then I a