Упростите выражения: 1) 6x (2x - 1) - 7x 2) 2 (5x - 4y + 1) - 3 (3x - 3y +1) 3) a + b + c - (a - b - c) 4) 7 (2a + 5b) - 5 (3b - 4a) 5) 8 (3x - 2y) - 7 (y+x) 6) -2 (a - 3b) + 3 (b - 2a)

Упростите выражения:
1) 6x (2x - 1) - 7x
2) 2 (5x - 4y + 1) - 3 (3x - 3y +1)
3) a + b + c - (a - b - c)
4) 7 (2a + 5b) - 5 (3b - 4a)
5) 8 (3x - 2y) - 7 (y+x)
6) -2 (a - 3b) + 3 (b - 2a)
- Предмет:
  Алгебра
- Автор:
  elliscjdb
- 6 лет назад

Ответы 1

1) 6х(2х-1) - 7х = 18х в квадрате - 6х - 7х= 18х в квадрате -13х2) =10х-8у+ 2 -(9х- 9у +3)= 10х-8у+2 - 9 х+ 9у -3= х+у-13) = а + б+с -а +б + с = 2б+2с4) = 14а +35б-(15б-20а)= 14а + 35б -15б+20а= 34а+20б5)= 24х-16у + 7у -7х= 17х-33у6) = -2а +6б+ 3б -6а= 9б- 8а
- Автор:
  cain
- 6 лет назад
- 0
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Упростите выражения: 1) 6x (2x - 1) - 7x 2) 2 (5x - 4y + 1) - 3 (3x - 3y +1) 3) a + b + c - (a - b - c) 4) 7 (2a + 5b) - 5 (3b - 4a) 5) 8 (3x - 2y) - 7 (y+x) 6) -2 (a - 3b) + 3 (b - 2a)

Ответы 1

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Упростите выражения:
1) 6x (2x - 1) - 7x
2) 2 (5x - 4y + 1) - 3 (3x - 3y +1)
3) a + b + c - (a - b - c)
4) 7 (2a + 5b) - 5 (3b - 4a)
5) 8 (3x - 2y) - 7 (y+x)
6) -2 (a - 3b) + 3 (b - 2a)