Question

Resolva as cotas

1- 4+2-7{7+7[-7+7]+(4-7)+8}

2- {40+200-200(27-32)+40}

3- [ 400-400+200+700(-200-10)]

preciso para hoje!!!!!!!​

Answer 1

Resposta:

1- -22

2- 1280

3- 146800

Explicação:

1- 4+2-7×{7+7×[-7+7]+(4-7)+8} =

4+2-7×{7+7×[-7+7]+(-3)+8} =

4+2-7×{7+7×[-7+7]-3+8} =

4+2-7×{7+7×0-3+8} =

4+2-7×{7+0-3+8} =

4+2-7×{7-3+8} =

4+2-7×{-4+8} =

4+2-7×4 =

4+2-28 =

6-28 =

-22

2- {40+200-200×(27-32)+40} =

{40+200-200×(-5)+40} =

{40+200+1000+40} =

{240+1000+40} =

{1240+40} =

1280

3- [400-400+200+700×(-200-10)] =

[400-400+200+700×(-210)] =

[400-400+200-147000] =

[200-147000] =

146800