exam Maths Puzzle Numerical Ability

Can someone help me on this problem?

I need to solve: 8x - 5 + 9x = 17x - 5

Thank you,
Lisa

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exam Other Question

simplify

54m third power/9m fourth power The problem is:

Express the exponential function as log functions:
10^x= 1000

My answer is 3.

10^2x+1 =3

My answer is x=.2385

e^3y=1

My answer is x=.7675

Please and thank you in advance.