3/14X[7-4/(2/15+2/3)]
1个回答
3/14X[7-4/(2/15+2/3)]
=3/14X[7-4/(2/15+10/15)]
=3/14X[7-4/(4/5)]
=3/14X(7-5)
=3/14X2
=3/7
相关问题
解方程:4/7X-1/2=6/7*3/4 3/5+2/3X=14/15 10X+6*(15-X)=138
14/15 x (1/2-3/7)
一元二次方程 (3.14×2x÷4)+x+(3.14x²÷x)+(3.14x²÷x-x)=15.7
1又3/4+[2又3/14-﹙2又3/14-1.875﹚]×7/15
(-4又3/17)x2又2/15-8又3/17x14又13/15-4x(-14又13/15)
解方程 5/7+3/7x=8 6/7:3/4=X:14/9 4又2/7+7X=9又3/14 2/3x=26-(2/3乘1
:15-4/5÷3/2-7/15 3/4×14/15-3/4÷15/2 13/15÷5/3+2/15×3/5 11/12
3、计算.3/4÷7/8÷15/14 (4/9+2/15)÷2/15 3/20÷ 0.2×2/3
(9x+14)/7-(2x-3)/3-(3x+4)/2=1
3(X-7)+2(X-4)=15怎么解 3(X-7)+2(X-4)=15怎么解