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True [87]
3 years ago
13

Resolver 3 -2x=12 -6x

Mathematics
2 answers:
GREYUIT [131]3 years ago
7 0

Answer:

x=

mixed number form: 2 1/4

decimal form: 2.25

exact form: 9/4

mr Goodwill [35]3 years ago
5 0

Answer:

x = 9/4

Step-by-step explanation:

Solve for x.  Start by adding 6x to both sides, which results in 3 + 4x = 12.

Combine the constants, obtaining 4x = 9.

Dividing both sides by 4, we get x = 9/4.

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Alex777 [14]
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3 0
3 years ago
Find the sum of 7a^3 + 14a +12 and -6a^3 +12a^2 -7
SOVA2 [1]
To find the sum:

{7a}^{3} + 14a + 12  + ( {- 6a }^{3} ) + {12a }^{2}   - 7 \\  = {7a }^{3}   -  {6a}^{3}  + {12a }^{2}  + 14a + 12 - 7 \\  =  {a}^{3}  + {12a }^{2}  + 14a + 5
Therefore the answer is a^3+12a^2+14a+5.
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4 years ago
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6 0
3 years ago
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babymother [125]

Answer: 1,431

<u>Step-by-step explanation:</u>

split the thing into two rectangular prisms

small prism dimensions: 18 x 2 x 3

multiply the dimensions to get 108

large prism dimensions: 7 x 21 x 9

multiply the dimensions to get 1,323

add 1,323 and 108 together to get 1,431

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