化简:4x-[5x-2(x-1)]
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化简:4x-[5x-2(x-1)]
化简:4x-[5x-2(x-1)]
化简:4x-[5x-2(x-1)]
原式 =4x-5x + 2(x-1)
=-x+2x-2
=x-2
X-2
4x-(5x-2x+2)=4x-(3x+2)=x-2
4x-[5x-2(x-1)]
=4X-(5X-2X+2)
=4X-3X-2
=X-2
4X-(5X-2X+2)
=4X-(3X+2)
=4X-3X-2
=X-2
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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