SOS!
15*(a+2)=6*(2a+7)=?
12b-7*(b+4)=26-4b=?
5*(3c+2)=8*(9-2c)=?
10R+2*(7R-2)=5*(4R+3)+3R=?
SOS!!!
15*(a+2)=6*(2a+7)=?
12b-7*(b+4)=26-4b=?
5*(3c+2)=8*(9-2c)=?
10R+2*(7R-2)=5*(4R+3)+3R=?
SOS!!!
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Answers & Comments
15a-30-12a-42=0
3a+12=0
вроде бы так
15а-12а=42-30
3а=12; а=4
12b-7*(b+4)=26-4b
5b+4b=26+28
9b=54; b=6
5*(3c+2)=8*(9-2c)
15с+10=72-16с
15с+16с=72-10
31с=62; с=2
10k+2*(7k-2)=5*(4k+3)+3k
10к+14к-4=20к+15+3к
24к-23к=15+4
К=19