Answer:
<h2>-1</h2>
Step-by-step explanation:
2 - (-4) + (-y)
Substitute y = 7 to the expression:
2 - (-4) + (-7) = 2 + 4 - 7 = 6 - 7 = -1
Step-by-step explanation:

2-1, 3-2, 4-3, 1*1, 1/7, any number of expressions fit the bill here.
The only 'small number' that I know that would affect the answer is an exponent that looks like ³ so the problem would be x³+x
remember that x³=x times x times x
if x=3 then
3³+3=27+3=30
X cannot be 6 or -2/5 because if they were the denominator would be zero