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3 years ago

How to solve system by substitution X+y=10 X-y=2

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

Answer:

x = 6 , y = 4

Step-by-step explanation:

Solve the following system:

{x + y = 10

x - y = 2

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for y:

{x + y = 10

x - y = 2

Hint: | Solve for y.

Subtract x from both sides:

{y = 10 - x

x - y = 2

Hint: | Perform a substitution.

Substitute y = 10 - x into the second equation:

{y = 10 - x

2 x - 10 = 2

Hint: | Choose an equation and a variable to solve for.

In the second equation, look to solve for x:

{y = 10 - x

2 x - 10 = 2

Hint: | Isolate terms with x to the left hand side.

Add 10 to both sides:

{y = 10 - x

2 x = 12

Hint: | Solve for x.

Divide both sides by 2:

{y = 10 - x

x = 6

Hint: | Perform a back substitution.

Substitute x = 6 into the first equation:

{y = 4

x = 6

Hint: | Sort results.

Collect results in alphabetical order:

Answer: {x = 6 , y = 4

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3 years ago

Read 2 more answers

$10.40 to $13.12 is simplify your answer

Bumek [7]

The required simplified value of $10.40 to $13.12 is $2.72.

Given that,
To determine the simplified value of $10.40 to $13.12.

<h3>What is simplification?</h3>

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
In the question, asked about the difference between the numbers
$10.40 to $13.12
= 13.12 - 10.40
= $2.72

Thus, the required simplified value of $10.40 to $13.12 is $2.72.

Learn more about simplification here:
brainly.com/question/12501526

#SPJ1

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