Mathematics
67x - 58y = 192
58x - 67y = 183
Linear Equations
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Answer
Given,
Equations :
67x - 58y = 192 ……..(1)
58x - 67y = 183 ……..(2)
Multiplying equation (1) by 58, we get :
⇒ 58(67x - 58y) = 192 × 58
⇒ 3886x - 3364y = 11136 ……..(3)
Multiplying equation (2) by 67, we get :
⇒ 67(58x - 67y) = 183 × 67
⇒ 3886x - 4489y = 12261 ………(4)
Subtracting equation (3) from (4), we get :
⇒ 3886x - 4489y - (3886x - 3364y) = 12261 - 11136
⇒ 3886x - 3886x - 4489y + 3364y = 1125
⇒ -1125y = 1125
⇒ y = = -1.
Substituting value of y in equation (1), we get :
⇒ 67x - 58(-1) = 192
⇒ 67x + 58 = 192
⇒ 67x = 192 - 58
⇒ 67x = 134
⇒ x = = 2.
Hence, x = 2 and y = -1.
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