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数学
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1,解下列方程:(1)13x-15x+x=-3 (2)2.5y+10y-6y=15-21.5 (
1,解下列方程:
(1)13x-15x+x=-3
(2)2.5y+10y-6y=15-21.5
(3)½b-2/3b+b=2/3×6-1
帮下忙,作出正确答案,
人气:405 ℃ 时间:2019-11-07 17:42:36
解答
(1)-x = -3 x=3
(2)6.5y = -6.5 x = -1
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