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Earn +20 ptsQ: What is twice the sum of a number and 4?
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What is Twice the sum of 4 and three times some number is 34?
2*4 + 3*x = 34
Twice the sum of a number and four is eighteen?
Half of 18 is 9 and 5+4 = 9 so the number is 5
Twice the sum of x and y and The sum of twice x and y?
Twice the sum of 'x' and 'y' . . . 2(x+y) The sum of twice 'x' and 'y' . . . (2x+y)
5 times the sum of a number and 4?
Your equation would be 5(x + 4). In this case it's easiest to work backwards, starting with the "sum of a number and four" part of the problem. This is simply written as x + 4, since we don't know what "a number" is referring to and have to call it x. Then we just need to multiply that answer by 5, so we'd write the equation as 5 * (x + 4) or 5(x + 4). Make sure you have the parentheses, because if not it changes the answer entirely.
What number is twice the sum of its digits?
18. 1+8=9 9x2=18
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