... LLC L16 75_ C34.fm Page 354 Saturday, January 31, 2004 6:09 PM 354 Mathematics for Water/ Wastewater Treatment Plant Operators A replacement section of 10-inch pipe is to be sandblasted before it ... 90 .5 ¥ 7.3 = 9 .55 6 ¥ 1.03 = 13 ÷ 14.3 = 8.2 ÷ 96 = ÷. 053 = © 2004 by CRC Press LLC L16 75_ C34.fm Page 348 Saturday, January 31, 2004 6:09 PM 348 Mathematics for Water/ Wastewater Treatment Plant Operators ... – = 5, find x 28 If x + = –8, find x 29 If x – 10 = –14, find x 30 If 5x – = –6, find x © 2004 by CRC Press LLC Mathematics for Water/ Wastewater Treatment Plant Operators L16 75_ C34.fm Page 351 Saturday,...