3 years ago

Twice a number is three more than nine

Mathematics

2 answers:

antoniya [11.8K]3 years ago

8 0

answer: how we supposed to do it?

Step-by-step explanation:

i don't even understand

KonstantinChe [14]3 years ago

5 0

Answer:

Step-by-step explanation:

Let that number be <em>x</em>.

$2x = 9 + 3$

$2x = 12$

$x = 6$

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$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}$

$6x - 9 - 2(1 - x) = x + 9 \\ ⇢ 6x - 9 - 2 + 2x = x + 9 \\ ⇢ 8x - x = 9 + 11 \\ ⇢ 7x = 20 \\ ⇢ x = \frac{20}{7} \\ ⇢ x = 2.857$

${ \bf{ \underbrace{To\:verify:}}}$

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try that :)

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2 years ago

Twice a number is three more than nine​

Twice a number is three more than nine