(1)7:x=4:3(2)x:3/7=14:25(3)x/12=5/4(4)x/1.6=5/0.8(5)0.6:4.8=12:x (6)5/3:x=4/5:9/20

问题描述:

(1)7:x=4:3(2)x:3/7=14:25(3)x/12=5/4(4)x/1.6=5/0.8(5)0.6:4.8=12:x (6)5/3:x=4/5:9/20

1)7:x=4:3x=7/(4/3)x=7*3/4x=21/4(2)x:3/7=14:25x=14/25*3/7x=6/25(3)x/12=5/4x=5/4*12x=5*3x=15(4)x/1.6=5/0.8x=5/0.8*1.6x=5*2x=10(5)0.6:4.8=12:x x=12/(0.6/4.8)x=12/0.6*4.8x=96(6)5/3:x=4/5:9/2...