exam Maths Puzzle Numerical Ability

Please help me solve this equation:
7-6x<4-5x

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exam Other Question

I messed up the question

3a^2+15a
________
2^3-25a

Can you help me solve this
Thank you How would you slove:

square root of 3y-2 = 3 - square root of 3y+1

I know you would multiply both sides to the second power, getting only 3y-2 on one side but the other side