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If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + 4y = β9 2x + 5y = β6 (6 points) Question 2 options: 1) 2x + 5(4y β 9) = β6 2) 2x + 5(β4y β 9) = β6 3) 2(4y β 9) + 5y = β6 4) 2(β4y β 9) + 5y = β6
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If you were to use the substitution method to solve the following system, choose the new equation af...
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