15×a+15×c=( )_刷题宝

题干

15×a+15×c=( )

A：a+15×c

B：(a+c) ×15

C：a×15×c

上一题下一题 0.0难度选择题更新时间:2018-03-19 11:22:59

答案(点此获取答案解析）

B

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