exam Maths Puzzle Numerical Ability

Simplify:

3x/ x + y - 2y/x

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exam Other Question

Can you please show me how to solve this problem step by step please ? 0.8-4(X-1)= 0.2 + 3(4-X).I just need to see how the process works and why you apply those steps to the problem. Eric is preparing to run in the Bay Marathon. One day, he ran and walked a total of 16 miles. If he ran one mile more than twice as far as he walked, how many miles did he run? Thank you for helping