The Sum of Three Times a Number and Seven is Twenty-Five
Apply the problem-solving strategy to find a number when "the sum of three times a number and seven is twenty-five". Let be the number. "Three times a number" translates to . The "sum" of this and is . "Is twenty-five" translates to . This gives the equation . To solve, subtract from both sides to get . Then divide by to find . Checking the answer: three times is , plus is . Thus, the number is .
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Ch.2 Solving Linear Equations - Intermediate Algebra @ OpenStax
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The Sum of Four Times a Number and Two is Fourteen
The Sum of Three Times a Number and Seven is Twenty-Five
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