7.6ⅹ+4.6+ⅹ=16.5ⅹ解:16.5X-8.6ⅹ=4.6 7.9X=4.6 X=46/79希望可以帮到您!
7.6x+x-16.5x=-4.6-7.9x=-4.67.9x=4.6x=0.58227