Question

Paso a paso por favor

Answer 1

Respuesta:

1. 3-[2+4-(2-7)+1]-[2-(4+7-1)-2]=1

3-[2+4+5+1]-[2-4-7+1-2]=1

3-12+10=1

2. -2-7-[-3+1-(1+2-3)+1]-[-7+4-(2+5)]=2

- 9-[-3+1-1-2+3+1]-[-7+4-7]=2

- 9-[-1]-[-10]=2

- 9+1+10=2

3. [-9-11-(-18+21-3)+7]-[-18+21-(3-11+15)]=-9

[-9-11+18-21+3+7]-[3-3+11-15]

-13-3+3-11+15=-9

4.-4-12-[(-13-20+8)-4]-[-21+16-(-15+3)]=6

- 16-[-25-4]-[-21+16+15-3]

- 16+25+4+21-16-15+3=6

Espero haberlos ayudado:)