9分之2:7分之1 两边同时乘以63得
=9分之2×63:7分之1×63
=14:9
2:0.15 两边同时乘以20得
=2×20:0.15×20
=40:3
9分之2:7分之1(化简各比)2:0.15(化简各比)
9分之2:7分之1(化简各比)2:0.15(化简各比)
数学人气:765 ℃时间:2020-02-18 15:39:15
优质解答
我来回答
类似推荐
猜你喜欢
- 1Tom,—— read in the sun.It's bad for your eyes.(选择填空) A doesn't B don't C not
- 2“去吧宝贝”英语怎么说
- 3not only but also的反义疑问句怎么变
- 4be close to造句
- 5We will have a football match next week.she is going to travel aroud the world.些改成否定句和疑问
- 6已知函数f(x)=x2+ax+3,当x∈[-2,2]时,f(x)≥a恒成立 求a范围
- 7你的经历真是丰富!用英语翻译
- 8what( )your classmates( A,are draw B,are drawing c,is drawing
- 9函数y=log2(x2-6x+5)的单调递增区间为_.
- 10英语同根词的问题