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RoseWind [281]
4 years ago
10

What 1/3x+9=21 answer?

Mathematics
2 answers:
pentagon [3]4 years ago
3 0
1/3x+9=21

Subtract 9 from both sides.

1/3x+9−9=21−9

1/3x=12

Multiply both sides by 3.

3*(1/3x)=(3)*(12)

x=36

frosja888 [35]4 years ago
3 0


1/3x + 9 = 21   (subtract 9 from each side)
<u>.        - 9    -9 </u>

<u />  1/3x = 12   (multiply 3 to each side)

   x = 12*3

   x=36

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