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3 years ago

D + 3 < 12

Mathematics

1 answer:

rusak2 [61]3 years ago

5 0

D + 3 < 12
-3 from both sides.
D=9
so your correct answer is D<9
aka
D

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$2x + 9 = 5x$

$5x = 2x + 9$

Subtract sides 2x

$- 2x + 5x = - 2x + 2x + 9$

$3x = 9$

Divide sides by 3

$\frac{3x}{3} = \frac{9}{3} \\$

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CHECK :

$2x + 9 = 5x$

$2(3) + 9 = 5(3)$

$6 + 9 = 15$

$15 = 15$

So the value is correct.

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3 years ago

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Answer:
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