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3 times 21 more than a number is 12. What is the number?
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3 times 21 more than a number is 12. What is the number?
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Apr 12, 2019
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3 times 21 more than a number is 12. What is the number?
Mathematics
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David Bronn
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Answer: x = -17
Form your equation, where x is the number.
3(x + 21) = 12
Solve for x.
3(x + 21) = 12 Distributive Property
3x + 63 = 12 Subtract 63 from both sides
3x = -51 Divide by 3 to both sides
x = -17 Answer!
WBuck
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Apr 13, 2019
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WBuck
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Turn it into an equation then solve.
3 (x + 21) = 12
3x + 63 = 12
3x = -51
x = -17
Louis W
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Apr 17, 2019
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Louis W
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