x+4y+11=2x+3y求x=?y=?
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x+4y+11=2x+3y求x=?y=?
x+4y+11=2x+3y求x=?y=?
x+4y+11=2x+3y求x=?y=?
化简,得x+y=11 则y=11-x,将y带入原方程中,得x=11/4,y=33/4
化简后11+y=x, 俩未知数求值应该有俩方程的。
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