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Systems of two linear equations in two variables SAT question
Math · Algebra · Medium · Answer it here, explanation included.
In the solution 
to the system of equations above, what is the value of x ?
Enter a number or fraction (like 3/17 or 0.176). Press Enter to check.
ExplanationShow
The correct answer is 7. Subtracting the second equation from the first equation eliminates the variable y.
Dividing both sides of the resulting equation by 4 yields x = 7.
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