exam Maths Puzzle Numerical Ability

Can you please help me with this?



-36+2w=-8w+w

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exam Other Question

Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).
Three batteries are
How do i evaluate the following:

log3 81
log4 256
log2 (1/32)
log5 1
log3 (-1)

Please help
thanks
Lucy