[3-7(1-8)]
parentheses first 1-8= -7
-7*-7= 49
3-49= -46
am I correct?
The solution should be written out as
[3-7(1-8)]
= [3-7(-7)]
= [3 + 49]
= 52
So, no, you are not correct
Question such as your can be simply typed into Google, using only round brackets
http://www.google.ca/#hl=en&q=%283-7%281-8%29%29+&meta=&aq=&oq=%283-7%281-8%29%29+&fp=91f9a26b7cbd6393