[5 - (5 - 2(5 - 6) + 7)] + 2= ?

 

[5 - (5 - 2(-1) + 7)] + 2= ?

 

[5 - (+3(-1) + 7)] + 2= ?

 

[5 - ((-1)+10)] + 2= ?      +3 + +7 = +10

 

[5 - (+9) + 2= ?                -1 + +10 = +9

 

[7- (+9)= ?                        5 + 2 =7

 

[7- (+9)= ?               + (+) - = -      -9 + +7 = -2

 

? = -2

Hi Professor,

It is great that you are answering questions but you messed that one up a little.

$$(5-(5-2(5-6)+7))+2\\

=(5-(5-2(-1)+7))+2\\

=(5-(5+2+7))+2\\$$

2*-1 is done BEFORE 5-2