exam Maths Puzzle Numerical Ability

Can you tell me if this is correct?
Find three consecutive integers such that four times the sum of the first and second is 17 more than 7 times the third
1st integer:n
2nd integer:n+2
3rd integer:n+4
4n+7(n+4)+17

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exam Other Question

Committe Representation. There are 6 republican,5 democrat, and 4 independent candidates. How many different ways can a committee of 3 Republicans,2 Deomcrats,and 1 Independent be can you help me with this problem please
write an equation in slope-intercept form that satisfies each condition.
passes through (4,5) and is parallel to x+2y=4

i did it like this 4+2(5)=4 im not sure if thats right... please help