新SAT官方Daily Practice每日一题数学计算题
- 2017年08月15日14:02 来源:小站教育作者:小站SAT编辑
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Read the following SAT test question and then click on a button to select your answer.
8月SAT数学官方Daily Practice 每日一练,点击
-3(x+3)-8=6-4x
Which of the following is the solution to theequation shown?
A.x=11
B.x=-11
C.x=23
D.x=-23
重点单词:
multiple ['mʌltipl]adj. 许多,多种多样的n. 倍数,并联
property ['prɔpəti]n. 财产,所有物,性质,地产,道具
yield [ji:ld]n. 生产量,投资收益v. 生产,屈服,投降
option ['ɔpʃən]n. 选择权,可选物,优先购买权v. 给予选
solve [sɔlv]v. 解决,解答
equation [i'kweiʃən]n. 相等,方程(式), 等式,均衡
solution [sə'lu:ʃən]n. 解答,解决办法,溶解,溶液
答案:C
解析:
Option C is correct. To solve -3(x+3)-8=6-4x, firstuse the distributive property on the left side of theequation to yield -3x-9-8=6-4x. Combining liketerms on both sides of the equation yields -3x-17=6-4x. Finally, isolating x on one side of the equation reveals that x=23.