Solve by Substitution 5x-4y=2 , -10x+8y=-4

Math
,
Solve for in the first equation.
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Add to both sides of the equation.
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 .
Replace all occurrences of in with .
Simplify .
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Simplify each term.
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Apply the distributive property.
Cancel the common factor of .
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Multiply by .
Cancel the common factor of .
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Multiply by .
Combine the opposite terms in .
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Add and .
Add and .
Since , the equation will always be true.
Always true
Remove any equations from the system that are always true.
Solve by Substitution 5x-4y=2 , -10x+8y=-4

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