2/1+28/15×( )-3/2=4/1
1个回答
2/1+28/15×( )-3/2=4/1
28/15×( )-3/2=3/2-4/1
28/15×( )=12/5
( )=12/5×15/28
()=9/7
相关问题
1+1+1+1 =28,2×1=28,2+3=15,2-3=1,那么,2×3=( ).2是( ),1是( )
20×[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25×2.4) 2.55×7
计算:15/28×27+15/28=?0.64×【2-(3/4+3/8)】=?
1/2+15/28*?-2/3=1/4
算一算. 3 14 ×28 = 2 15 ×25 = 4× 1 5 = 3 8 × 2 9 = 27× 5 36 = 1
1×2×3/2+2×3×4/2+3×4×5/2+……+28×29×30/2
28×3+4.5x=93 2.6x+1.8=7 3x-0.86=3.61 x+16=1.4×15 4x-2×3=102
a1=1/1×2×3+1/2=2/3,a2=1/2×3×4=3/8,a3=1/3×4×5+1/4=4/15…则a99=多
1、已知2+2/3=2²×2/3,3+3/8=3²×3/8,4+4/15=4²×4/15,
(1)2×(-3)3-4×(-3)+15;