If ray CE bisects angle DCF, and if angle DCE = x - 11, and angle ECF = 166 - 2x, then find ECF

(3x-8) or (3x+8)

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.