Maths Puzzle Algebra

Solve following questions

1. Solve for X and Y in the following problems.

a. X+Y=6, 2X+Y=8

b. 7X+3Y=14, 5X+9Y=10

c. 4X+Y=16, 2X+3Y=24

d. 12X+Y=25, 8X-2Y=14

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Other Question

a ball is thrown upward from the surface of the earth with an initial of 96 feet per second. what is the maximum height it reaches? thank you for helping This is the question: Write the equation 3x-4y=20 in slope intercept form.



Help, thank you