Подобных слагаемых. 1. 8x+21x 2.78a-49a 3.326y+99y 4.15,3x-8,8x 5.9,8b+b 6.31t-9,11t. 7.6x-5x+x 8.7b+b-8b

1)8х+21х=29х
2)78а-49а=29а
3)3,26у+99у=102,26у
4)15,3х-8,8х=6,5х
5)9,8b + b = 10,8b
6)31t-9.11t=21.89t
7)6x-5x+x=2x
8)7b+b-8b= 0

1) 8x+21x = 29x
2) 78a-49a = 29a
3) 326y+99y = 425y
4) 15,3x-8,8x = 6,5x
5) 9,8b+b = 10.8b
6) 31t-9.11t = 21.89t
7) 6x-5x+x = 2x
8) 7b+b-8b = 0