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Q: solve for the subtitution method: 2x-3y=-17 and 6x+75=y
A: 2x - 3y = -17 6x + 75 = y; y = 6x + 75; 2x - 3(6x + 75) = -17; 2x - 18x - 225 = -17; -16x = -17 + 225; -16x = 208; x = 208/-16; x = -13; 2(-13) - 3y = -17; -26 - 3y = -17; -3y = -17 + 26; -3y = 9; y = -9/3; y = -3; Solution set: (-13, -3)
Question
Asked 2/25/2012 10:18:04 PM
Updated 5/16/2015 7:28:28 PM
Rating
3
2x - 3y = -17
6x + 75 = y;
y = 6x + 75;

2x - 3(6x + 75) = -17;
2x - 18x - 225 = -17;
-16x = -17 + 225;
-16x = 208;
x = 208/-16;
x = -13;

2(-13) - 3y = -17;
-26 - 3y = -17;
-3y = -17 + 26;
-3y = 9;
y = -9/3;
y = -3;

Solution set: (-13, -3)
Added 5/16/2015 7:28:28 PM
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