exam Maths Puzzle Numerical Ability

What are the steps in finding the values of x and d in----

110x + d = 0 and 95x + d = o

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exam Other Question

help me please!!!!!This is for a test!!!!!
How do you get the answer!!!!!

A small flare is launched off the deck of a ship. The height of the flare above the water is given b (-3x+7)-(5x-6)