nerd58
28.12.2019 •
Mathematics
What is the solution of the system? use the substitution method. {y+7=3x6x−2y=12
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Ответ:
6x-2y=12
y=3x-7
6x-2(3x-7)=12
6x-6x+14=12
14=12
No solution
Ответ:
8x:3x - number of blue chips is doubled
8x-3x=15
5x=15
x=3
So, there are 9 red chips