six more than five times a number (x) is at least 21

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Seudónimo Seudónimo

02-09-2015
Mathematics

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six more than five times a number (x) is at least 21

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W0lf93 W0lf93 · Answer 1 · 2017-08-28T23:13:12+02:00

W0lf93 W0lf93

28-08-2017

We need to turn this into an equation.
- "Five times a number (x)" means: 5x
- "Six more than" means: + 5
- "At least 21" means: ≥ 21
So: 5x + 6 ≥ 21
Subtract 6 from both sides of the equation: 5x ≥ 15
Divide both side of the equation by 5: x ≥ 3

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