What is the value of the expression when you add four positive numbers and subtract eight negative numbers?
To find the value of the expression when you add four positive numbers and subtract eight negative numbers, you would need to perform two separate operations: addition and subtraction.
Let's assume the four positive numbers are: a, b, c, and d.
The eight negative numbers are: -x, -y, -z, -m, -n, -p, -q, and -r.
First, you perform the addition of the four positive numbers: a + b + c + d.
Second, you perform the subtraction of the eight negative numbers: -x - y - z - m - n - p - q - r.
It is important to note that in subtraction, when we subtract a negative number, it is equivalent to adding a positive number. So, we can rewrite the subtraction as: +(x + y + z + m + n + p + q + r).
Therefore, the value of the expression can be calculated as: a + b + c + d + (x + y + z + m + n + p + q + r).
It is not possible to determine the exact value of the expression without knowing the values of the variables involved. You would need to substitute the values of a, b, c, d, x, y, z, m, n, p, q, and r into the expression in order to find the numerical value.