2q - p = - 4 ------ eq (i)

 q - p = - 3 ------ eq (ii)

SIMPLY subtract eq (ii) from eq (i) to ELIMINATE p and find the value of q, which should be - 1.

Substitute - 1 for q into any of the 2 equations to get the value of p.

That's all....nothing COMPLEX and/or CONFUSING! 

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