Question

3.If ((13) +27] + (-21) = (13) + (27
+ x), then x =
1)21
2)22.3
3)-22
4)-21​

Answer 1

Answer:

4) x=-21

Step-by-step explanation:

(13+27)-21=13+(27+x)

40-21=13+(27+x)

19=13+(27+x)

19-13=27+x

6=27+x

x=6-27

x=-21

Answer 2

Answer:

(4) - 21

Step-by-step explanation:

[(13 + 27) + (-21)] = (13) + (27 + x)

[40] - 21 = 40 + x

19 = 40 + x

x = 19 - 40

x = -21 (Answer)