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OpenStudy (anonymous):
A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9. What is the original number? -30 30 4 -4
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OpenStudy (anonymous):
It's 4
OpenStudy (anonymous):
4-7 = -3 *3 = -9
OpenStudy (mathstudent55):
A number: x decreased by 7: x - 7 multiplied by 3: 3(x - 7) answer is -9: 3(x - 7) = -9 Solve for x.
OpenStudy (anonymous):
Let the number=x 3(x-7)=-9 solve for x
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