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

User Stamatis Tiniakos
by
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2 Answers

2 votes
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
User Harshad Pansuriya
by
8.2k points
1 vote
12x-9-3x=72
9x-9=72
9x-9+9=72+9
9x=81
9x/9=81/9
x=9
User Juan Zapata
by
8.3k points
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