解方程 2(x-2.6)=41.6 5(x+1.5)=17.5 8(x-6 解方程 2(x-2.6)=41.6 5(x+1.5)=17.5 8(x-6.2)=41.6 (x-3)除以2=7.5

解方程 2(x-2.6)=41.6 5(x+1.5)=17.5 8(x-6 解方程 2(x-2.6)=41.6 5(x+1.5)=17.5 8(x-6.2)=41.6 (x-3)除以2=7.5