
The number (x) in: "5 more than twice a number is 987" is what we are solving here.
In other words, you are looking for a number (x) that if you multiply it by two (same as twice) and then add 5, you get 987.
To solve this, you first write the problem as an algebra equation as follows: 2x + 5 = 987
Then you solve the equation by subtracting 5 from both sides, and then divide both sides by 2. Here is the math to illustrate better:
2x + 5 = 987
2x + 5 - 5 = 987 - 5
2x = 982
2x/2 = 982/2
x = 491
Answer = 491
The answer above is correct, because twice 491 is 982, and 5 more than 982 is in fact 987.
More Than Twice a number
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5 more than twice a number is 988
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