若式子四分之一*(x-1)-五分之二*(3x+2)与式子十分之一-四分之一*(1-x)的值相等,则x=?
人气:207 ℃ 时间:2020-02-04 02:20:17
解答
¼(x-1)-2/5(3x+2)=1/10-¼(1-x)
¼(x-1)-2/5(3x+2)=1/10+1/4(x-1)
-2/5(3x+2)=1/10
-4(3x+2)=1
-12x-8=1
-12x=9
x=-0.75
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