Variable
Step-by-step explanation:
Answer:
D.- ac
Step-by-step explanation:
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The steps are duplicated.Then, first I will write the steps in the right form:
19 = 5x - 1
20 = 5x
4 = x
Now, I will write the steps with the justification
19 = 5x - 1.... start
20 = 5x ..... Reason: addtion property of equality (you get this by adding +1 to both sides of the previous equality)
4 = x .... Reason: division property of equality (you get this by dividing by 5 both sides of the previous equality)
I guess you want to calculate the value of e. If so then:
-8.e = 4 . Divide both sides by 4:
-2.e = 1. Divide both sides by 2:
-e = 1/2. Multiply both sides with (-):
e = - 1/2
