Question

AYUDAA calcula: a) 1-(3-[4-(1-3)]) b) [3-(12-7):(-5)]-(-2)+54

Answer 1

$a) \\ 1 - ( 3 - (4 - (1 - 3))) \\ 1 - (3 - (4 - ( - 2)) \\ 1 - (3 - (4 + 2)) \\ 1 - (3 - 6) \\ 1 - ( - 3) \\ 1 + 3 = 4 \\ \\ b) \\ 3 - (\frac{12 - 7}{ - 5} ) - ( - 2) + 54 \\ 3 - ( \frac{5}{ - 5} ) + 2 + 54 \\ 3 - ( - 1) + 56 \\ 3 + 1 + 56 = 60$