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lbvjy [14]
3 years ago
14

What is the answer to 4n − -21 = 77?

Mathematics
1 answer:
kifflom [539]3 years ago
4 0
<h3>Hey there! </h3><h3>The value of n is unknown so, let's solve this equation, shall we?</h3><h2>Firstly, we have to subtract by the number 21 on each of your sides of your equation </h2><h3>Like this: </h3><h3>4n + 21 -21 = 77-12</h3><h3>Cancel out: 21-21 because it gives you the result of 0</h3><h3>Keep: 77-21 because it helps us solve for n so, 77-21 = 56</h3><h2>Our problem becomes: </h2><h3>4n =56</h3><h2>Secondly, we have divide by the number of 4 on each sides of the equation</h2><h3>Like this: </h3><h3>\frac{4n}{4} = \frac{56}{4}</h3><h3>Cancel out: \frac{4n}{4} because that gives you the result of 1</h3><h3>Keep: \frac{56}{4} because this gives you the result of n; \frac{56}{4} = 14</h3><h3>Therefore, the value of the unknown variable is  14 </h3><h3>n= 14</h3><h3>Good luck on your assignment and enjoy your day! </h3><h3>~LoveYourselfFirst:)</h3>
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