2. 外语
  3. Solve each of the following equations for x. (a)5x - 7 = 28 (b)12-5x=x + 30 (c)5(x + 2)=1 - 3x (d)(x + 6)(2x - 1)= 0 (e)x2 + 5x-

Solve each of the following equations for x. (a)5x - 7 = 28 (b)12-5x=x + 30 (c)5(x + 2)=1 - 3x (d)(x + 6)(2x - 1)= 0 (e)x2 + 5x-

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问题 Solve each of the following equations for x.
(a)5x - 7 = 28
(b)12-5x=x + 30
(c)5(x + 2)=1 - 3x
(d)(x + 6)(2x - 1)= 0
(e)x2 + 5x- 14 = 0
(f)x2-x- 1 =0
选项
答案-7, 2
解析
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