exam Maths Puzzle Numerical Ability

I HOPE U CAN HELP ME WITH THIS....SOLVE THE EQUATION AND INEQUALITIES. WRITE THE SOLUTION TO THE INEQUALITIES IN INTERVAL NOTATION. THANK U.

A) 2|3-P|-4=2

B) 2|3-P|-4<2

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exam Other Question

Solve the system by addition.
x + y = 9
x - y = 9
This is a last Subsitution question, but this one says solve by either ;addition or subtraction.

The problem is:
12a-5b=18
15a-5b=30

Please and Thank You=)