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2 years ago

Solving an Equation with Decimals

Mathematics

2 answers:

zhuklara [117]2 years ago

7 0

Answer:

y = 4

Step-by-step explanation:

Firlakuza [10]2 years ago

6 0

13.7y - 6.2y = 6.2y - 6.2y + 30

7.5y/ 7.5 = 30/7.5

y= 4

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3 years ago

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Answer: OPTION B.

Step-by-step explanation:

Given the following System of equations:

$\left \{ {{3x-5y=19} \atop {x+y=1}} \right.$

You can use the Elimination Method to solve it. The steps are:

1. You can mutliply the second equation by -3.

2. Then you must add the equations.

3. Solve for the variable "y".

Then:

$\left \{ {{3x-5y=19} \atop {-3x-3y=-3}} \right.\\.....................\\-8y=16\\\\y=\frac{16}{-8}\\\\y=-2$

4. Now that you know the value of the variable "y", you must substitute it into any original equation.

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Then:

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

Therefore, the solution is:

$(3,-2)$

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4 years ago

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kramer

Answer:

Step-by-step explanation:

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3 years ago

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4 years ago

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