6X-16=4X 3X+1=15-x 12x-1=15x-7 73+2(X-4)=81 7(4-X)=9(X-4)_数学解答

6X-16=4X 3X+1=15-x 12x-1=15x-7 73+2(X-4)=81 7(4-X)=9(X-4)

人气：396 ℃　时间：2020-04-24 17:43:01

解答

6X-16=4X出6X-4X=16得X=8.3X+1=15-X得3X+X=15-1得X3.5.12X-1=15X-7得12X-15X=-7+1得X=2.73+2(X-4)=81得2X=81-73-8得X8.7(4-X)=9(X-4)得X=4