Question

alguém me ajuda a resolver isso pfvr​

Answer 1

2x + 7y

2 x 3 + 7 x (-9)

6 + 7 x (- 9)

6 + (- 63)

6 - 63

- 57

___________________________________

(3x + 4) - 5

(3 x 3 + 4) - 5

9 + 4 - 5

13 - 5

8

___________________________________

23y + 4

23 x ( - 9) + 4

- 207 + 4

- 203