djlocolego djlocolego

10-11-2018
Mathematics

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What is 2.50x + 4x = 39

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MikeMart77 MikeMart77

10-11-2018

[tex]2.5x+4x=39\\6.5x=39\\x=39/6.5\\x=6[/tex]

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10-11-2018

[tex]2.50=2.5\\\\2.5x+4x=39\\\\6.5x=39\qquad\text{divide both sides by 6.5}\\\\x=\dfrac{39}{6.5}\\\\x=\dfrac{390}{65}\\\\\boxed{x=6}[/tex]

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