Question

1)Calcule juntando os termos semelhantes:

a) a – 6b + a – 2b =





b)-3y + 5c  -3y +2c  =





c) -4x² +3x -6 +3x² -5x +9 =





d)-y – 4z + 3x – 6y +7z -2x =

Answer 1

a) a – 6b + a – 2b =

a + a - 6b - 2b

2a - 8b

b)-3y + 5c  -3y +2c  =

- 3y - 3y + 5c + 2c

- 6y + 7c

c) -4x² +3x -6 +3x² -5x +9 =

- 4x² + 3x² + 3x - 5x - 6 + 9

- x² - 2x + 3

d)-y – 4z + 3x – 6y +7z -2x =

- y - 6y - 4z + 7x + 3x - 2x

- 7y + 3z + x