Answers

2014-09-06T21:24:11+08:00
2+5=7.  So the question is 7=3+x (represents unknown number).  So 7-3=4 :)
0
2014-09-07T16:01:22+08:00
Algebraic Expression :)

2 + 5 = 3 + x
7 = 3 + x
7 - 3 = x
4 = x

so the answer is x = 4, hope I helped you out ;)
0