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Judith Bowman
Mathematics
28 October, 03:28
Twice the sum of a number and 4 is less than 12
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Sawyer Walters
28 October, 03:40
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Twice the sum of a number and 4 is less than 12 can be written as:
2 (x + 4) < 12
Of course it can be also solved:
2 (x + 4) < 12
2 * x + 2 * 4 < 12
2x + 8 < 12 / - 8 (both sides)
2x < 4 / : 2 (both sides)
x < 2
So the number we're looking for should be less than 2.
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Janet Blair
28 October, 03:41
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Let the number be x.
2 * (x + 4) < 12
2x+8 < 12
2x < 12-8
2x < 4 Divide both sides by 2.
x < 4/2
x< 2. Therefore the number is less than 2.
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