解方程,并验算.1OX-2.7X=58.4,6.8x+3.2x=100_数学解答

解方程,并验算.1OX-2.7X=58.4,6.8x+3.2x=100

人气：165 ℃　时间：2020-04-18 19:49:05

解答

10X-2.7X=58.4 7.3X=58.4 X=58.4/7.3=8 10X8-2.7X8=80-21.6=58.4
6.8X+3.2X=100 10X=100 X=10 6.8X10+3.2X10=68+32=100