book Maths Puzzle Numerical Ability

can you please help me with this problem, thank you, confused 1st cycle college student,

-2=x-12

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book Other Question

A machine that originally cost $15,600 has a value of $7500at the end of 3 years. The same machine has a value of $2800 at the end of 8 years.

a.) Find the average rate of chang
Dear Tutor this is the problem:

Find three consecutive integers whose sum is 37 less than 5 times the third integer.

I need this at 8:00 tonight please work fast.