Solve for x and y 217 x + 131 y equal to 913 and 131 x + 217 y is equal to 8 2 7
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Answer:
x = 3 , y = 2
Step-by-step explanation:
217x + 131y = 913...............equation 1
131x + 217 = 827.................equation 2
adding equation 1 and 2 , we get
348x + 348y = 1740
x+y = 5.............................dividing by 348 ...........equation 3
substracting equation 1 and 2 , we get
86x - 86y = 86
x-y = 1..........................dividing by 86 ....................equation 4
adding equation 3 and 4, we get
2x = 6
∴ x = 3
putting the value of x in equation 3 , we get
∴ y = 2
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