Question

докажите тождество 6(3b-4)-5(3b-11)+2=3b+33

Answer 1

18b-24-15b+55+2=3b+33
3b+33=3b+33

Answer 2

10-9(c-1)+7c-16=3-2c вот это

Answer 3

помогите

Answer 4

10-9c+9+7c-16=3-2c. 3-2c=3-2c.

Answer 5

10-9с+1+7c-16=3-2c 10+1+7-16-9с+7с=3-2с 3-2с=3-2с

Answer 6

18b-24-15b+55+2=3b+33
18b-15b-3b=33+24-55
0b=2