Question

Вычислите в)-21:7+{42:(-6)}

Answer 1

$- 21 \div 7 + (42 \div ( - 6)) = - 10 \\ \\ 1) - 21 \div 7 = - 3 \\ \\ 2)42 \div ( - 6) = - 7 \\ \\ - 3 + ( - 7) = - 10$

Answer 2

-21:7+(42:(-6))=-21/7+42/-6=126/-42 + 294/-42=-168/-42=168/42=4