Identify the number that does not belong with the other three. Explain your reasoning. -
frac%7B10%7D%7B2%7D%20" id="TexFormula1" title=" \frac{10}{2} " alt=" \frac{10}{2} " align="absmiddle" class="latex-formula">, -13.4, 
, 22.7
1 answer:
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Answer:
The best first step for solving the given system using substitution is substitute the value of -9x from equation 1 in equation 2
Step-by-step explanation:
Given :
To Find: What is the best first step for solving the given system using substitution?
Solution:
--1
--2
Since we are supposed to solve these equations using substitution method
So, the first best step for solving the equation is :
Both the equations contains -9x
So, substitute the value of -9x from equation 1 in equation 2
Substitute the value of y in 1 to get value of x
So,
Thus the solution is (2,7)
Hence the best first step for solving the given system using substitution is substitute the value of -9x from equation 1 in equation 2