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2 years ago

3x/2-7=x/4-2 I know the answer is four but I don’t know how to get it

Mathematics

1 answer:

Levart [38]2 years ago

8 0

Answer:

X=4

Step-by-step explanation:

(3X/2) - (X/4) = 5

(6X-X)/4 = 5

(5X)/4 = 5

5X = 20

X = 4

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Answer:

First option: $3x^2-5x=-8$

Second option: $2x^2=6x-5$

Fourth option: $-x^2-10x=34$

Step-by-step explanation:

Rewrite each equation in the form $ax^2+bx+c=0$ and then use the Discriminant formula for each equation. This is:

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1) For $3x^2-5x=-8$ :

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2) For $2x^2=6x-5$ :

$2x^2-6x+5=0$

Then:

$D=(-6)^2-4(2)(5)=-4$

Since $D$ this equation has no real solutions, but has two complex solutions.

3) For $12x=9x^2+4$ :

$9x^2-12x+4=0$

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4) For $-x^2-10x=34$ :

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