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Elza [17]
3 years ago
5

Solve the system of equations by substitution:

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Answer:

<h3>y=<em><u>x-2</u></em></h3><h3><em><u>so</u></em><em><u> </u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em></h3>

<em><u>x</u></em><em><u>+</u></em><em><u>(</u></em><em><u>x-2</u></em><em><u>)</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em>

<em><u>2</u></em><em><u>x</u></em><em><u>-</u></em><em><u>2</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em>

<em><u>2</u></em><em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em><em><u>+</u></em><em><u>2</u></em>

<em><u>2</u></em><em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>4</u></em>

<em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>4</u></em><em><u>/</u></em><em><u>2</u></em>

<em><u>x</u></em><em><u>=</u></em><em><u>7</u></em>

<em><u>x</u></em><em><u>+</u></em><em><u>y</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em>

<em><u>7</u></em><em><u>+</u></em><em><u>y</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em>

<em><u>y</u></em><em><u>=</u></em><em><u>1</u></em><em><u>2</u></em><em><u>-</u></em><em><u>7</u></em>

<em><u>y</u></em><em><u>=</u></em><em><u>5</u></em>

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