exam Maths Puzzle Numerical Ability

Solve the rational inequality. State and graph the solution set.
a/a+2 is smaller than 0

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Can someone help me on this problem?

I need to find values for m and b in the following system so that the solution to the system is (-3, 4).

5x + 7y = b
mx + y = 22

Thanks so much,
Sher how do i sove this problem (step by step)
x-y=5 x+2y=7