Solve by Substitution y=x+5 , 4x+y=20

Math
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Replace all occurrences of with in each equation.
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Replace all occurrences of in with .
Simplify .
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Remove parentheses.
Add and .
Solve for in the first equation.
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Move all terms not containing to the right side of the equation.
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Subtract from both sides of the equation.
Subtract from .
Divide each term by and simplify.
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Divide each term in by .
Cancel the common factor of .
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Cancel the common factor.
Divide by .
Divide by .
Replace all occurrences of with in each equation.
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Replace all occurrences of in with .
Add and .
The solution to the system is the complete set of ordered pairs that are valid solutions.
The result can be shown in multiple forms.
Point Form:
Equation Form:
Solve by Substitution y=x+5 , 4x+y=20
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