If 2x + 5 = 8x, then 12x = ?

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Mathematics

8 October, 04:05

If 2x + 5 = 8x, then 12x = ?

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Answers (2)

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Grayson Mitchell · Answer 1

2x+5=8

-2x - 2x

5 = 6x

divide by 6 on both sides

.8333=x (it's a repeating decimal)

12 (.8333) = 9.9996 (depending on how the teacher like it rounded)

Halle · Answer 2

X = 10

~because~

2x+5=8x, subtract 2x from both sides:

5=6x, divide 6 on both sides:

x=5/6, then rewrite the equation:

12 (5/6)

x=10