Quote: 3-{1.6x-3[x-3.5 (x+10)]}
the acronym people use to remember the order of operations is PEMDAS
parentheses
exponents
multiplication/division
addition/subtraction
so the first thing we'd do here is
3.5(x+10) = 3.5x + 35
then x - (3.5x + 35) = -2.5x - 35
now we multiply this by 3
3(-2.5x - 35) = -7.5x - 105
now subtract this from 1.6x
1.6x - (-7.5x - 105) = 9.1x + 105
and finally subtract this from 3
3 - (9.1x + 105) =
-9.1x - 102
+6251 
