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creativ13 [48]
3 years ago
14

-12x + 18y = 21(6x -9 = -9​

Mathematics
1 answer:
Leokris [45]3 years ago
4 0

Answer:

x = 0 , y = 7/6

Step-by-step explanation:

Solve the following system:

{18 y - 12 x = 21

6 x - 9 = -9

In the second equation, look to solve for x:

{18 y - 12 x = 21

6 x - 9 = -9

Add 9 to both sides:

{18 y - 12 x = 21

6 x = 0

Divide both sides by 6:

{18 y - 12 x = 21

x = 0

Substitute x = 0 into the first equation:

{18 y = 21

x = 0

In the first equation, look to solve for y:

{18 y = 21

x = 0

Divide both sides by 18:

{y = 7/6

x = 0

Collect results in alphabetical order:

Answer: {x = 0 , y = 7/6

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Answer:

Jenny´s age is 19 and her mother is 43.

Step-by-step explanation:

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Therefore Jenny´s 19 years old.

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where

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The perimeter p of a regular hexagon varies directly with the length l of one side of the hexagon. What is an equation that rela
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3 years ago
A water tank hols 540 galloms but is leaking at a rate of 4 gallons per week a second water tank holds 720 gallons but is leakin
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Let after n week both tanks have same quantity of water .

for first tank
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tank hold 540 gallon of water ,
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