Solve by Substitution three x plus three y equals twenty-one , four x plus two y equals eighteen

Solve by Substitution 3x+3y=21 , 4x+2y=18
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Calculate in the Initially equation.
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Subtract from both sides of the equation.
First, divide each term by and Clarify.
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Divide each term in by .
The common factor should be canceled of .
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Cancel the common factor.
Divide by .
Clarify each term.
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Divide by .
The common factor should be canceled and .
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Factor out of .
The common factors should be canceled.
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Factor out of .
Cancel the common factor.
Reformulate the expression.
Divide by .
Replace all occurrences of in with .
Simplify .
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Simplify each term.
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Use the distributive law.
First, multiply by .
Multiply by .
Add and .
Calculate in the second 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 .
The common factor should be canceled.
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Cancel the common factor.
Divide by .
Divide by .
Replace all occurrences of in with .
Simplify .
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Multiply by .
Subtract from .
The solution to the system of equations can be represented as a point.
The result can be displayed in a variety of ways.
Point Form:
Equation Form:
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