12÷( )=3/5=9:( )=( )/30=(
12÷()=5分之3=():30=()%=()成=()(填小数)
解方程 5/14X=5/9 X÷2/3=5/8 12/5÷X=3/10
9分之4÷5分之2= 12÷4分之3=
解方程 X:3/4=12 12/5÷X=3/10 4X-3+9=12
12÷(3/4÷1/5) = =
”1/3x÷12+2/3x÷30+0.5=3/5x÷12+2/5x÷30”这道方程怎么解?
2/2÷4/7= 2.4÷2/5= 14/15×3/8= 12÷4/7= 8-4/9=
12分之5÷什么=3
8/9x=4/5 2/3x÷1/4=12 3/4x÷1/6=18 (10/9-2/3)x=
3/10÷20= 9÷3/4= 5/8×1/4= 6/11×5/12= 5/9-1/6= 2/3÷4/7= 1/8+3/
1/5×12÷1/5= 0.25×12.5÷1/32= 2/3×4/9×
2=6 ,3=12 ,4=20 ,5=30 ,6=42 ,9=多少