That's easy 172.1 times 10 with the exponent of 7
.
X=12
This is because you subtract 6 from both sides to get the x isolated.
So x=18-6
x=12 :)
The equivalent expression to given expression is 1/3.
<h3>What is Equivalent Expression?</h3>
Equivalent expressions are defined as algebraic expressions which give the same resulting expression. An algebraic expression (or) a variable expression is defined as a combination of terms by the operations such as addition, subtraction, multiplication, division.
Here, given expression

= 
= 
= 1/3
Thus, the equivalent expression to given expression is 1/3.
Learn more about equivalent expression from:
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There might be a variety of averages for the 12 boys.
The answer is -20 and you solve by putting it in the calculator