0.5X+0.5X=6.5

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0.5X+0.5X=6.50.5X+0.5X=6.50.5X+0.5X=6.50.5X+0.5X=6.5（0.5+0.5）x=6.51x=6.5x=6.50.5X+0.5X=6.5X=6.50.5X+

0.5X+0.5X=6.5
0.5X+0.5X=6.5

0.5X+0.5X=6.5
0.5X+0.5X=6.5
（0.5+0.5）x=6.5
1x=6.5
x=6.5

0.5X+0.5X=6.5
X = 6.5

0.5X+0.5X=6.5
X=6.5

0.5X+0.5X=6.5 解一元一次方程：0.5x-0.7x=6.5-1.3x 0.5x-0.7=6.5-1.3x 0.5x-0.7=-1.3x+6.5 0.5x-0.7=6.5-1.3x 0.5x=6.5 求x! 6.5x+x-0.5=7 过程 0.5X+120+0.3X=X 4X+0.5X=13.5X x-30-0.2x=0.5x x-0.3x-0.5x=20 9x+0.5x+x= X+0.5X=3 X-0.8X=8 求x:|x|-|x-4|=0.5x-1 x+0.5x=30 X=12.8+0.5X x-0.5x=20, 0.5X=X-9