2X+18=7X
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2X+18=7X2X+18=7X2X+18=7X18=7X一2X18=5X18/5=X18=7X-2X5X=18X=35X=18X=18/518=5x3.6=x×=2X=3.618=5XX=18/5X
2X+18=7X
2X+18=7X
2X+18=7X
18=7X一2X
18=5X
18/5=X
18=7X-2X
5X=18
X=3
5X=18
X=18/5
18=5x
3.6=x
×=2
X=3.6
18=5X X=18/5
X=3.6
2x-7x=-18 -5x=-18 x=18/5
7x-2x=18,5x=18,x=3.6
5x=18
x=3.6
lz不要这么调皮好么
x等于18/5
7x-2x=18,5x=18,x=18/5