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how do i turn this into an equation

The sum of three numbers is 119. The second number is 4 times the third. The third number is 7 more than the first. What are the numbers?

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Steve S. | Computer Science, MS Office,Guitar Instruction, Music CompositionComputer Science, MS Office,Guitar Instr...
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x + 4(x+7) + (x+7) = 119
x+4x+28+x+7 = 119
6x + 35 = 119
6x = 119-35
6x = 84
x = 14
 
1st number is 14
2nd number is 84
3rd number is 21