Question

simplify the following step by step solve 21+[(-7)-35]

Answer 1

21+[-7-35]
21+[-42]
21-42
-21

Answer 2

your answer

given :-

21+[(-7-(35)]

(-)(-)=(+)
(+)(-)=(-)

so

21+(-7-35)

21+(-42)

21-42=-21

whenever (-)(-) are given the we add but (-) sign comes because of subtracting greater number with small

hope helps

@AnanyaR☺