9+12=m or 9+12=21
this is because when we start with m-9=12 we know that m is supposed to be the sum of 9 and 12.
if we check our work we will see this
9+12=21
9+12=21
m-9=12
21-9=12
The expression is equivalent to
.
<h2 /><h2>Given that</h2>
Expression; 
<h3>We have to determine</h3>
Which expressions are equivalent to the given expression.
<h3>According to the question</h3>
Expression; 
To solve the given expression follow all the steps given below.
By applying the distributive property of multiplication;

Then,
The equivalent expression is,

Hence, the expression is equivalent to
.
To know more about Equation click the link given below.
brainly.com/question/13174611
225
Step-by-step explanation:
Look it up on google.
Answer:
$25
Step-by-step explanation:
i have an odd method of solving these types of equations
25x=100
x=4
340/4 = 85
85 x 3 = 255