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Mathematics 15 Online
OpenStudy (anonymous):

help pleaseee!! the sum of three number is 138. the third number is 6 more than the first. the second number is 4 times the third . what are the number ?

OpenStudy (mathstudent55):

Choose a variable for the first number. Do you like x?

OpenStudy (anonymous):

4x+(x+6)=138 right ?

OpenStudy (mathstudent55):

|dw:1425862750102:dw|

OpenStudy (mathstudent55):

Fill in the third number now.

OpenStudy (anonymous):

4x ? for the third column ?

OpenStudy (mathstudent55):

No. The first number is x. The third number is: "the third number is 6 more than the first." What is 6 more than x?

OpenStudy (mathstudent55):

6 more than x is x + 6. That is what the third number is. |dw:1425863253246:dw|

OpenStudy (mathstudent55):

What about the second number? It is 4 times the third number. What is 4 times x + 6?

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