Marczander Marczander

28-10-2015
Mathematics

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What is the answer 12x-9-3x=72

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Narusin12 Narusin12

28-10-2015

12x-9-3x=72
9x-9=72
9x-9+9=72+9
9x=81
9x/9=81/9
x=9

Answer Link

heyitsabbyy heyitsabbyy

28-10-2015

Work:
12x-9-3x=72
combine like terms: 12x +(-3x)
9x-9=72
add 9 to both sides
9x=81
divide by 9 on both sides
x=9

Answer:
x=9

Answer Link

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