Answers

2015-09-21T13:32:28+05:30
X + 18 = 20
⇒ x + 18 - 18 = 20 -18
⇒ x = 2
0
2015-09-21T13:34:30+05:30
X+18=20 this is your question

x=20-18 now if you transfer the +18 into r.h.s. then it will become-18 
x=2 and so answer is 2
0