10:12=25:( ) 3.6:( )=0.9:1.2
10:12=25:( ) 3.6:( )=0.9:1.2
解方程:4.5x-1.2x=68、4.5x+12=10x+0.9、10.8-1.05x=1.05+9.59
12x-10x=3.6 x=?
60+15%=?1-30%=?0.9+15%=?37.5%÷12.5%=?12÷(1-50%)=?1.2×25%+2.8
一.添括号,使算式成立.7×0.9+1.2÷0.3-0.2=25
解方程1.2-0.9+x =0.8
1.2-0.9+5x=0.8
解方程 2.5X-1.6=0.9 25%+0.5%x=15 2.6y-1.2y=4.2
3.6*11.1+1.2*66.7=?简便算
1.2.6+2X=3.6
( )/2.4=3.6/1.2 7.5/( )=2.5/12 2.7/( )=3/9 1.6/ ( )=0.5/3/8
1.2÷25==?