.不论X取什么值,ax-3x=2+b都成立,求a/b的值.

Question

.不论X取什么值,ax-3x=2+b都成立,求a/b的值.

Answer 1

不论X取什么值?
假设X=1
a-3=2+b
a-b=5``````````````````````````````①
假设X=2
2a-6=2+b
2a-b=8`````````````````````````````②
由①②得
a=3,b=-2
b/a=-2/3