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2 answers:
We start by using the distributive property to expand the terms 
and 
. When we do, we obtain 
and 
.
Putting those back into our equation, we have:
Next, we combine all of the constants on either side:
Finally, we want to get the variable a by itself on one side of the equation, so we perform the following steps to isolate it:
(Add 20 to both sides)
(Subtract 3a from both sides)
(Divide both sides by 2 to isolate a)
So, we obtain our answer of
.
Putting those back into our equation, we have:
Next, we combine all of the constants on either side:
Finally, we want to get the variable a by itself on one side of the equation, so we perform the following steps to isolate it:
So, we obtain our answer of
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Answer:
36
20 percent * 180 =
(20:100)* 180 =
(20* 180):100 =
3600:100 = 36
Now we have: 20 percent of 180 = 36
Question: What is 20 percent of 180?
Percentage solution with steps:
Step 1: Our output value is 180.
Step 2: We represent the unknown value with $x$.
Step 3: From step 1 above,$180=100\%$.
Step 4: Similarly, $x=20\%$.
Step 5: This results in a pair of simple equations:
$180=100\%(1)$.
$x=20\%(2)$.
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
$\frac{180}{x}=\frac{100\%}{20\%}$
Step 7: Again, the reciprocal of both sides gives
Step-by-step explanation:
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