Vampfox
25.07.2021 •
Mathematics
Christina buys 3 DVDs . 2 of the DVDs cost X+Y . Write an expression that shows the amount the 3 DVDs cost
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Ответ:
3×(18−d)=54−3d
Step-by-step explanation:
The cost of one dvd is (18-d)(18−d) .
The cost of three dvds is 3×(18-d)=54-3d3×(18−d)=54−3d
Ответ:
First option is correct