What is the trial and error method of 5-2k=-3
Answers
Answer:
Answer= -8
Step-by-step explanation:
5-2×(-1)=-3 Wrong
5-2×(-2)=-3 Wrong
5-2×(-3)=-3 Wrong
5-2×(-4)=-3 Right. Correct Answer
SOLUTION
TO DETERMINE
The trial and error method of 5 - 2k = - 3
EVALUATION
Here the given equation is
5 - 2k = - 3 - - - - - - (1)
We solve by trial and error method as below
Putting k = 0 in Equation 1 we get
5 - ( 2 × 0 ) = - 3
⇒ 5 - 0 = - 3
⇒ 5 = - 3
Which is not true
So k = 0 is not a solution
Putting k = 1 in Equation 1 we get
5 - ( 2 × 1 ) = - 3
⇒ 5 - 2 = - 3
⇒ 3 = - 3
Which is not true
So k = 1 is not a solution
Putting k = 2 in Equation 1 we get
5 - ( 2 × 2 ) = - 3
⇒ 5 - 4 = - 3
⇒ 2 = - 3
Which is not true
So k = 2 is not a solution
Putting k = 3 in Equation 1 we get
5 - ( 2 × 3 ) = - 3
⇒ 5 - 6 = - 3
⇒ - 1 = - 3
Which is not true
So k = 3 is not a solution
Putting k = 4 in Equation 1 we get
5 - ( 2 × 4 ) = - 3
⇒ 5 - 8 = - 3
⇒ - 3 = - 3
Which is true
So k = 4 is not a solution
FINAL ANSWER
Hence the required solution is k = 4
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