5x+12=8x-15
问题描述:
5x+12=8x-15
答
5x=8x-27
8x-5x=27
3x=27
x=27÷3
x=9
5x+12=8x-15
5x=8x-27
8x-5x=27
3x=27
x=27÷3
x=9