exam Maths Puzzle Numerical Ability

Please help me with the following :

Find three consecutive even integers such that 6 times the first is 16 less than four times the sum of the second and third.

thank u

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exam Other Question

Find the solution by substitution:
3x+8y=22
10x-2y=16
Please help!!!!!!

1) (3x+14)^2+25=0

2) 25x^2=13

3) 2(x-5)^2=3

4) x^2+4x+4=7

Thanks!!!!!!