How do you insert parentheses to make #6xx7-3xx4+1=27# true?

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Answer 1 · 2018-04-10T13:26:43

#6xx7-3xxcolor(blue)((4+1))=27#

We got: #6xx7-3xx4+1=27#

So, in order to make this true, we insert parenthesis here:

#6xx7-3xxcolor(blue)((4+1))=27#

#6xx7-3xx5=27#

#42-15=27#

#27=27#

Obviously this is true, so we need to insert the brackets at the #4+1# part.