Question

60+{2-[-7+18+(-3+12)]}-[7(-3)-18+(-2)+1]

Answer 1

Explicação passo-a-passo:

60+{2-[-7+18+(-3+12)]}-[7(-3)-18+(-2)+1]

60+{2-[-7+18+9]}-[7-21-2+1]

60+{2-[11+9]}-[-14-1]

60+{2-20}-[-15]

60-18+15

42+15

57

Answer 2

60+{2-[-7+18+9]}-[7-21+(-2)+1]

60+{2-[11+9]}-[7-23+1]

60+{2-20}-[-16+1]

60+(2-20)-(-15)

60+(-18)-(-15)

60-18-(-15)

42-(-15)

42+15

57