Question

УПРОСТИТЕ ВЫРАЖЕНИЕ!!!
а) 4b+5+3b-3
б) b-4+5b-7
в) -7b-7+(b+7)
г) (2b-4) - (3b-9)
д) 7b+3(b-1)
е) 4b-2(b+3)

Answer 1

а) 4b + 5 + 3b - 3 = (4b + 3b) + 5 - 3 = 7b + 2

б) b - 4 + 5b - 7 = (b + 5b) - 4 - 7 = 6b - 11

в) - 7b - 7 + (b + 7) = - 7b - 7 + b + 7 = (- 7b + b) - 7 + 7 = - 6b

г) (2b - 4) - (3b - 9) = 2b - 4 - 3b + 9 = (2b - 3b) - 4 + 9 = - b + 5

д) 7b + 3(b - 1) = 7b + 3b - 3 = 10b - 3

е) 4b - 2(b + 3) = 4b - 2b - 6 = 2b - 6