Question

Use elimination to solve the system of equations Y=45x+75 and Y=55x+30

Answer 1

• (4.5, 277.5)

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Eliminate y and equate the right sides:

• 45x + 75 = 55x + 30
• 55x - 45x = 75 - 30
• 10x = 45
• x = 4.5

Find y by substitution of the value for x:

• y = 45*4.5 + 75
• y = 277.5