book Maths Puzzle Numerical Ability

Solve the equation:
3x - 5 + x = 6 + 4x - 2
x = ____

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book Other Question

Please help me with this problem on page 402...Thank you very much.

1/5x+3/5y=12/5

-1/5x+3/5y=6/5 find two consecutive even integers whose product is
288