如题所述
第1个回答 2020-04-02
y=3-x,11x+8y=11x+8(3-x)=3x+24追答
y=3-x,11x+8y=11x+8(3-x)=3x+24
第2个回答 2020-04-02
x+y=3
11x+8y
=3x+8x+8y
=3x+8(x+y)
=3x+8×3
=3x+24
=8(x+3)本回答被网友采纳
11x+8y
=3x+8x+8y
=3x+8(x+y)
=3x+8×3
=3x+24
=8(x+3)本回答被网友采纳