Question

2,1b-3,4a-(b-26a)=?
надо

Answer 1

2,1 b - 3,4 a - b +26a =2,1 b - b - 3,4 a +26a = 1,1b+ 22,6a  = 22,6a +1,1b

Answer 2

2,1b-3,4a-(b-26a)=2,1b-3,4a-b+26a=1,1b+22,6a