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带入法和加减消元结果不一样(1/90)*x+1/6=(1/60)*y,(1/60)*x-1.5=(1/90)*y求解
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带入法和加减消元结果不一样 (1/90)*x+1/6 = (1/60)*y, (1/60)*x-1.5 = (1/90)*y 求解
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答案和解析
(1/90)*x+1/6 = (1/60)*y,
x+15=1.5y
(1/60)*x-1.5 = (1/90)*y
x-90=2y/3
x=174
y=126
x+15=1.5y
(1/60)*x-1.5 = (1/90)*y
x-90=2y/3
x=174
y=126
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