how to find restrictions?
example-

2/a = (3/x) - (4/b) , abx =/= 0

for restrictions, there's a rule where you can have the variable you are solving for be in the restriction..? so you have to substitute the x in the restriction with the solution of x. Can someone show me the substitution part?

Question

how to find restrictions?
example-

2/a = (3/x) - (4/b) , abx =/= 0

for restrictions, there's a rule where you can have the variable you are solving for be in the restriction..? so you have to substitute the x in the restriction with the solution of x.  Can someone show me the substitution part?

anonymous · Answer

any number divided by zero is undefined. so a, b, or x cannot be equal to zero.

and i'm not sure what do you mean by the last part of your last question, "you have to substitute the x in the restriction with the solution of x" ?

anonymous · Answer

since the rule is that you can't have abx =/= 0 because x is part of the restriction. you have to substitute x with something else

anonymous · Answer

according to my teacher

anonymous · Answer

so x can be anything except zero, therefore $$\left\{ x \in \mathbb{R}, x \neq 0 \right\}$$

is this what you're looking for? or you want to rearrange the equation in terms of x? can you type the original question, so that i'm sure what i'm telling you.

anonymous · Answer

okay so this is what i did first |dw:1413137570930:dw|