book Maths Puzzle Numerical Ability

y2/4+y/3+y2/3-y/5=

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book Other Question

1.Solve. One number is 5 more than anouther number. If the sum of the numbers is 285, find the numbers

2.The sum of four consecutive odd integers is 136. Find the integers.

3
please tell me the proof for this question that Complex numbers and real Numbers are same numbers( I mean if we show complex numbres with C and real numbers with R we have : C~R )