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vazorg [7]
3 years ago
13

3

formula">+7.1=2.5b+11.5
Mathematics
1 answer:
vlada-n [284]3 years ago
8 0
( \beta +7.1=2.5b+11.5)*10 \\ 10b+71=25b+115 \\ 10b-25b=115-71 \\ -15b=44 \\ b= \frac{-44}{15}
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