X-y=-3b There are countless equations whose solutions satisfy A: 1 = 2:- 1 = 2:-3b.

You can calculate a=-2 b= 1/3.

There are countless solutions to the binary linear equation, as long as the corresponding coefficients are proportional, that is to say, although there are two binary linear equations, only one is valid. You can think about it, if only one equation of two unknowns is valid, how many sets of solutions do they have? It goes without saying.

Substitute a b

-6X+3= 1/3

Calculate X= 4/9

I am a college student. I experienced many such problems in junior high school. The teacher may not say so, but you can understand it this way, which is easy to understand.

For example: X+Y= 1 2X+2Y=2 These two equations are equivalent, and X Y must have countless solutions.

There is another situation:

If the coefficients of X Y are proportional and the last constant term is not proportional, such a binary linear equation system has no solution. For example, x+y =12x+2y = 31:2 =1:2 is not equal to 1: 3.

You can't find a solution.