Help lol i cant do math for the life of me
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Answer: B. x, in the second equation
Step-by-step explanation:
The given system :
To apply the substitution method , first we need to select the best variable and a equation which is easy to simplify.
From the given system equation (2) have all the numbers which are multiples of 3.
Then we divide 3 on both sides of equation (2), we get
Therefore, the best variable to solve for and from what equation is x, in the second equation.
For this case we have to:
"two to the third power" is equivalent to the algebraic expression:
Therefore, we can rewrite the expression given as:
Thus, the value of the initial expression is: 4
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