if x = 6 + y and y = -z/3, what does x equal in terms of z?
a. 3(6+z)
b. 3(z-6)
c. 6-z/3
d. z/3-6
e. 6+z/3
x = 6 + y
y = -z/3
substituting,
x = 6 - z / 3
thus letter (c).
post it.
To determine the value of x in terms of z, we need to substitute the expression for y into the equation for x. Let's start by finding the value of y:
Given that y = -z/3, we can substitute this value into the equation for x:
x = 6 + y
x = 6 + (-z/3)
To simplify this equation further, we can distribute the negative sign to both terms inside the parentheses:
x = 6 - z/3
Thus, x equals 6 - z/3.
Therefore, the correct option is c. 6 - z/3.