Question

What is the value of x in the solution of the system of equations 3x + 2y = 12 and 5x – 2y = 42

Answer 1

x = 27/4

Explanation:

3x + 2y = 12 and 5x – 2y = 42

Add the two equations together to eliminate y

3x + 2y = 12

5x – 2y = 42

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8x = 54

Divide each side by 8

8x /8 = 54/8

x = 27/4