the greatest common factor of 2c squared times 2c is 2c
12-2c = 2c add 2c to both sides 12 = 4c divide both sides by 4 3 = c
-2c
4a-2c = 2
2417-2c = 2415
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2c+4c-3c+5c = 6c +2c = 8c
4c-7 = 2c+11 4c-2c = 11+7 2c = 18 c = 9
1-2c = -1
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3ab x 2c = 6abc
4a*2c=8ac