Solve a system of equations using augmented matrices

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y= 5

5x + 4 y = 15

converting to augmented matrix

[ 5 4 15 ]

[ 0 1 5]

second row is already in the converted form , and shows y=5

put this value of y in 5x + 4 y = 15

5 x + 4 * 5 = 15

5x = 15 - 20

x = -5/5

x = -1

ANSWER IS y =5 and x= -1..................

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