Question

a. 5 – [ 7 – 2 ( 1 – 9 ) – 3 + 12] + 4


b. [ - 2 + 3 ( 2 – 5 ) : 3 ] – [ ( 3 – 5 + 2 ) – 2 ( 3 – 4 ) ]

Answer 1

Respuesta:

A)

$5 - |7 - 2 \: (1 - 9) - 3 + 12| + 4 \\ 5 - | 7 - 2 \times ( - 8) - 3 + 12| + 4 \\ 5 - | 7 - ( - 16) - 15| + 4 = \\ 5 - 8 + 4 = 1$

B)

$| - 2 + 3 \: (2 - 5) \div 3| - |3 - 5 + 2) - 2 \: (3 - 4) | \\ |( - 2) + 3 \: . \: ( - 3) \div 3| - |0 - 2 \: . \: ( - 1)| = \\ ( - 2) + ( - 3) - 0 - ( - 2) = ( - 3)$