2x八分之五4625解方程2x+八分之五=4.6252x=4.625-八分之五2x=4x=4÷2x=22,八分之一1/8=0.125=12.5%?(×)?(+)?(×)?=八分之一3,x3减3等于八分之三求x的值x^3-3=3/8x^3=3/8+3=27/8=(3/2)^3x=3/2跟三减跟三X=X求X的值4,xx八分之三怎么做2/4X+1/4X=3/83/4X=3/8X=1/2x+3x/8=12111x/8=121x=121(8/11)x=885,78分之7该怎么解方程解:x分之8=12分之78/x