Three times some number equals seventy-eight more than the number itself?

Science & Mathematics by Anonymous 2018-06-07 01:04:00

Social Science

10 answers

Anonymous

3x = x + 78 2x = 78 x = 39.
Anonymous

Using algebra the value of the number is 39
Anonymous

3x = x + 78 2x = 78 x = 39
Anonymous

39
Anonymous

Call the number x. You can write the equation as you read through the question: Three times some number ....3x equals ....= seventy-eight more than the number itself .... x + 78 Put it together: 3x = x + 78 2x = 78 x = 39
Anonymous

3X=78+X -X=78-X 2X=78 X=39
Anonymous

Three times some number equals seventy-eight more than the number itself. Two times some number equals seventy-eight. The number is thirty-nine.
Anonymous

3n = n+78 2n = 78 n = 39
Anonymous

3x = x + 78 2x = 78 x = 39
Anonymous

Let n = the number. So you have 3*n = n + 78 3*n - n = 2n = 78 --> n = 78/2 = 39