The S A T® - SAT Suite of Assessments
, equals 50 represents this situation. Adding the equations in the system of two equations together yields open parenthesis, x. plus . y, close parenthesis, plus, open parenthesis, 2 x. minus . y, close parenthesis, equals, 40 plus 50. This can be rewritten as 3 x. equals 90. Finally, solving for . x. by dividing both sides of the equation by 3 ... ................
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