book Maths Puzzle Numerical Ability

Hi can you help me solve this please?

5(x+3)=7x+5

hope you can help

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book Other Question

please help me with this problem.

Plot the ordered triple in three- dimensional coordinate system. (plot points on the same graph)
(3,-4,2)
How would I solve by first eliminating the fractions?

x/2 - x/3 = 5