代数式3X+(X-1)/2与(2X-1)/3的值互为相反数,求x的值
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代数式3X+(X-1)/2与(2X-1)/3的值互为相反数,求x的值
代数式3X+(X-1)/2与(2X-1)/3的值互为相反数,求x的值
代数式3X+(X-1)/2与(2X-1)/3的值互为相反数,求x的值
3X+(X-1)/2与(2X-1)/3的值互为相反数
3X+(X-1)/2=-(2X-1)/3
18x+3x-3=-4x+2
25x=-1
x=-1/25
3X+(X-1)/2+(2X-1)/3=0
18X+3(X-1)+2(2X-1)=0
18X+3X-3+4X-2=0
25X=5
X=1/5
依题,互为相反数,则
3X+(X-1)/2=-(2X-1)/3
18x+3(x-1)=-2(2x-1)
18x+3x-3=-4x+2
25x=5
x=1/5
列出关系式:3x+(x-1)/2=-(2x-1)/3
将其移到一边再通分得出x=1/5