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26.09.2019 •
Mathematics
3(4r+5)-2(3r+4)=7
a. r= -1/3
b. r= 0
c. r= 1
d. r= 8/3
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Ответ:
Explaining:
3(4r + 5)-2 (3r+4)=7
12r+15 - 6r- 8=7
6r +7=7
6r=0
R=0
Ответ: