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equation
how do you write this as an equation.. “the sum of 100 and a number is equal to three times that number.”
100+x=3x
100+n=3(n) sum of 100 and a number n=number equals 3 times that number 3(n)
they are correct. the 3(n) and 3x in their example mean that they are multiplying. Your job is to isolate the x to one side of the equal sign, and then you will know what the number was…
100+x = 3(x)
sum of = plus if you see the word time = multiplying
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