12 + 5 equals...
-2
3n+5=5
13+-12--5 = 6
It is an algebraic expression which equals a + 28.
12 + 5 equals...
13
explain how to evaluate an algebraic expression for given variables. how would we evaluate the expression "3x-4y+9" when x=2and y=5?
-2
The answer is x = 5. There is nothing to evaluate there!
3n+5=5
13+-12--5 = 6
-13 Plug 5 in and multiply it by -5 which equals -25 12 - 25 = -13
(3 * 3)(2 * 5) (9)(10) 90
x = 5; is an assignment statement that assigns 5 to x. x = = 5; is a syntax error that fails to compile, missing an expression on the second equals sign.
5 times 5 plus 5 times 5 minus 5 divided by 5
6