new doc 61 - White Plains Middle School · 2015-11-21 · Step 2 Write a system of equations 75x +...
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new doc 61 - White Plains Middle School · 2015-11-21 · Step 2 Write a system of equations 75x + 55y + 30: 870,000 Step 3 Rewrite the system in Step 2 as a linear system in two