求(1)6x-4*(10-4x)=60 (2)130-x=[89-(90-x)]*2这两个方程的解,
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求(1)6x-4*(10-4x)=60 (2)130-x=[89-(90-x)]*2这两个方程的解,
求(1)6x-4*(10-4x)=60 (2)130-x=[89-(90-x)]*2这两个方程的解,
求(1)6x-4*(10-4x)=60 (2)130-x=[89-(90-x)]*2这两个方程的解,
(1)6x-40+16x=60 ,22x=100 ,x=50/11=4又6/11
(2)130-x=(x-1)*2 ,130-x=2x-2 ,3x=128 ,x=42又2/3
(1)6x-40+16x=60 , 22x=100 , x=50/11=4又6/11
(2)130-x=(x-1)*2 , 130-x=2x-2 , 3x=128 , x=42又2/3
(1)6x-40+16x=60 , 22x=100 , x=50/11=4又6/11
(2)130-x=(x-1)*2 , 130-x=2x-2 , 3x=128 , x=42又2/3