3(5-4x)=9 5/8x-1/3x-1/2=2/3 2/5(1-0.375x)=4/15

问题描述:

3(5-4x)=9 5/8x-1/3x-1/2=2/3 2/5(1-0.375x)=4/15
3(5-4x)=9 5/8x-1/3x-1/2=2/3 2/5(1-0.375x)=4/15 别忘了写过程

3(5-4x)=95-4x=9÷34x=5-34x=2x=0.55/8x-1/3x-1/2=2/3 两边乘2415x-8x-12=167x=12+167x=28x=42/5(1-0.375x)=4/15 1-0.375x=4/15÷2/50.375x=1-2/33/8x=1/3x=1/3÷3/8x=8/9