exam Maths Puzzle Numerical Ability

Could someone please take the time to help me solve the question: Solve the following system of three linear equations: 2 x + y + z = 3, - x + 2 y + 2 z = 1 and x - y - 3 z = -6. N

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How do you break down this word problem...and how do you solve

Dan is planning a dinner party for his office staff and their significant other. He goes down to the Union Hall an Find the misssing side length of each right triangle. Round to the nearest tenth and do ALL!!!


A.) A=12,B=9,C=?

B.) A=14,B=?,C=35

C.) A=?,B=4,C=41




Thanks so much