$\"\"$

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The system of equations are $\"\"$ .

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Equation 1: $\"\"$

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Equation 2: $\"\"$ .

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Observe the coefficient of each term, the coefficient of y - term is one in the first equation, so the best method is substitution method to solve the system of equations.

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Solve the first equation, $\"\"$ for y since the coefficient is 1.

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Add 3x to each side

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$\"\"$

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$\"\"$

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$\"\"$

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The value of $\"\"$ substitute in the second equation, $\"\"$ to find x.

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$\"\"$

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$\"\"$

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$\"\"$

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Add 6 to each side.

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$\"\"$

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$\"\"$

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Divide each side by 10.

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$\"\"$

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$\"\"$

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$\"\"$

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The value of $\"\"$ substitute in the either equation to find y.

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Equation 1: $\"\"$

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$\"\"$

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$\"\"$

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Add 6 to each side.

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$\"\"$

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$\"\"$

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$\"\"$

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The solution is $\"\"$ .