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Schach [20]
4 years ago
8

WHATS Y AND X ?!???!

Mathematics
1 answer:
Maurinko [17]4 years ago
3 0

Step-by-step explanation:

<em>Given </em>

<em>y </em><em>=</em><em> </em><em>-</em><em> </em><em>x </em><em>+</em><em>2</em><em> </em>

<em>And</em>

<em>5x </em><em>-</em><em> </em><em>7y </em><em>=</em><em> </em><em>5</em><em>8</em>

<em>5x </em><em>-</em><em> </em><em>7</em><em>(</em><em> </em><em>-</em><em> </em><em>x </em><em>+</em><em> </em><em>2</em><em>)</em><em> </em><em>=</em><em> </em><em>5</em><em>8</em>

<em>5x </em><em>+</em><em> </em><em>7x </em><em>-</em><em> </em><em>1</em><em>4</em><em> </em><em>=</em><em> </em><em>5</em><em>8</em>

<em>12x </em><em>=</em><em> </em><em>5</em><em>8</em><em> </em><em>+</em><em> </em><em>1</em><em>4</em>

<em>12x </em><em>=</em><em> </em><em>7</em><em>2</em>

<em>Therefore </em><em>x </em><em>=</em><em> </em><em>6</em>

<em>Now</em>

<em>y </em><em>=</em><em> </em><em>-</em><em> </em><em>6</em><em> </em><em>+</em><em>2</em><em> </em><em>=</em><em> </em><em>-</em><em>4</em>

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