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3 years ago

How do you solve this equation 3^3x-7=81^12-3x

1 answer:

6 0

I think you meant...

3^(3x-7)=81^(12-3x) (note that 81=3^4) so

3^(3x-7)=3^4^(12-3x)

3^(3x-7)=3^(48-12x) taking log or natural log of both sides show that

3x-7=48-12x

15x=55

x=11/3

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(3•x)•3-2=1 <br><br> I missed a lot of school and don’t know how to solve for x could you help me

elena-14-01-66 [18.8K]

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$(3x) \times 3 - 2 = 1$

$(3x \times 3) - 2 = 1$

$9x - 2 = 1$

Add sides 2

$9x - 2 + 2 = 1 + 2$

Simplification

$9x = 3$

Divide sides by 9

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

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

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

$x = \frac{1}{3} \\$

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4 0

3 years ago

HELP ONLY ANSWER QUESTION 10. THANKS

swat32

X - 5 = x^2

i) 0 - 5 = -5^2 = 25

ii) 4 - 5 = -1^2 = 1

iii) -4 - 5 = -9^2 = 81

5 0

4 years ago

Solve. −815x=2.24 Enter your answer as a mixed number in simplest form in the box. x =

lutik1710 [3]

x=2.7 x 10*-3

Step-by-step explanation:

-815x=2.24

x=-2.24/815

x=2.7 x 10*-3

3 0

3 years ago

Mia read x pages in the book. Laurie read 1/3 more than that

const2013 [10]

Step-by-step explanation:

Laurie read x+1/3 pages.

Mia read x pages.

6 0

3 years ago

Help me will give brain

Aleonysh [2.5K]

Answer:

The answer is C

Step-by-step explanation:

Let's solve your equation step-by-step.

4(x−2)=6x+18

Step 1: Simplify both sides of the equation.

4(x−2)=6x+18

(4)(x)+(4)(−2)=6x+18(Distribute)

4x+−8=6x+18

4x−8=6x+18

Step 2: Subtract 6x from both sides.

4x−8−6x=6x+18−6x

−2x−8=18

Step 3: Add 8 to both sides.

−2x−8+8=18+8

−2x=26

Step 4: Divide both sides by -2.

−2x/−2=26/−2

x=−13

Answer:

x=−13

3 0

3 years ago