exam Maths Puzzle Numerical Ability

I need help with solving this exponential equation

(6/27)x+1 =(3/4)x-1

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exam Other Question

Multiply the following fractions.

X^2 - 3x - 10/5x * 15x^2/3x- 15 -4y - (5y +6) = -7y + 3 i need a step by step on how to solve
-4y (-5y +6) = -7y + 3
20y + 6 = -7y + 3
i got stuck here