EVALUATE: solve
SIMPLIFY (in this case): find the simplest form of the expression, meaning you have to combine like terms
123 - 2x - 3x + 7 this is the original equation
To make it easier: spread apart the terms and add them together like so:
123 & 7
-2x & -3x
Add them together to get
130 - 5x THIS IS THE SIMPLEST FORM OF THE ORIGINAL EXPRESSION
Now, evaluate the expression when x equals 5, meaning you should substitute x for 5 wherever you see an x.
130 - 2 (5)
130 - 10
120 THIS IS THE VALUE OF THE EXPRESSION (ur second answer)