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Rockstar91217351411
@Rockstar91217351411
July 2022
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Известно,что a + b = 15. Чему равно (a * 3) + (b * 3) ? С группировкой
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gta7979
В=15-а, а=15-в
(15-в)*3+(15-а)*3=45-3в+45-3а=90-3в-3а=90-3(а+в)
Так как а+в=15
90-3*15=45
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Answers & Comments
(15-в)*3+(15-а)*3=45-3в+45-3а=90-3в-3а=90-3(а+в)
Так как а+в=15
90-3*15=45