Question

Efetue:
a:(5x-4x+7)-(3x+7x-1)
b:(6x-6x+9)-(3x+8x-2)
c:(7x-4y+2)-(2x-2y+5)

Answer 1

Oi....

Efetue:

a)

(5x - 4x + 7) - (3x + 7x - 1)

5x - 4x + 7 - 3x - 7x + 1

5x - 14x + 8

- 9x + 8

b)

(6x - 6x + 9) - (3x + 8x - 2)

6x - 6x + 9 - 3x - 8x + 2

6x - 17x + 11

- 11x + 11

c)

(7x - 4y +2) - (2x - 2y + 5)

7x - 4y + 2 - 2x + 2y - 5

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

5x - 2y - 3

Espero ter ajudado.