exam Maths Puzzle Numerical Ability

Graph this equation.

2x+y=5

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exam Other Question

132.48/x=147.12

Can you give me step by step to solve this, i did it with a calculator and got the answer, just forgot how to actually solve.
To solve the rational equation below, which step would result?
3/x+1/2= 8/(x+2)

I got: 3(x+2) + .5 = 8X

Is this correct?
Thanks~