A total of 121 people came to the school science fair this year. This is 7 more than twice the number of people who came to last years science fair. How many people came last year?
121 = 7+2x
To find out how many people came to last year's science fair, we need to solve the given word problem.
Let's assume the number of people who came to last year's science fair as 'x'.
According to the problem, this year's science fair had 7 more than twice that number.
Twice the number of people who came to last year's science fair is 2x.
Adding 7 to twice the number of people who came to last year's science fair gives us 2x + 7.
Given that a total of 121 people came to this year's science fair, we can set up the equation:
2x + 7 = 121
To solve for x, we need to isolate it on one side of the equation.
First, subtract 7 from both sides of the equation:
2x = 121 - 7
2x = 114
Then, divide both sides of the equation by 2 to solve for x:
x = 114 / 2
x = 57
Therefore, 57 people came to last year's science fair.