A linear equation in one variable has

Question:

A linear equation in one variable has

(a) only one solution

(b) two solutions

(c) more than two solutions

(d) no solution

Solution:

(a) A linear equation in one variable has only one solution.

e.g. Solution of the linear equation $a x+b=0$ is unique, i.e. $x=\frac{-b}{a}$

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