Question

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

Answer 1

6(3b-4)-5(3b-12)+2 = 3b+33
18b-24-15b+55+2 = 3b+33
18b-15b+55+2-24 = 3b+33
3b+57-24 = 3b+33
3b+33 = 3b+33