SOLUTION: I need help on figuring out how to find the equation and solving it to get the answer. The problem is: Abraham Lincoln's 1863 Gettsyburg Address refers to the year 1776 as "four sc

Question 102639This question is from textbook algebra 1
: I need help on figuring out how to find the equation and solving it to get the answer. The problem is: Abraham Lincoln's 1863 Gettsyburg Address refers to the year 1776 as "four score and seven years ago." Write an equation and solve for a score. This question is from textbook algebra 1

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let s=how many years there are in a score

First find the difference between 1863 and 1776

So four-score and 7 years is 87 years

So when you say "four-score", you're saying and when you add "..and 7 years" you're adding 7 to to get:

So this means the expression is equal to 87

Subtract 7 from both sides

Combine like terms on the right side

Divide both sides by 4 to isolate s

Divide

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Answer:
So our answer is

So this means a score is 20 years
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