So, 2.4s + 3t = 7 is a linear equation in two variable.
A linear equation in one variable is an equation of the form ...........

Q. The equation $ax+by+c=0$ completely describes a linear equation in two variables where $a$, $b$, and $c$ are real numbers.

Q.

The equation: ax + by + c = 0 completely describes a linear equation in two variables where a, b, and c are real numbers.

Q. Is this statement correct "A linear equation in one variable is an equation which can be expresses in form of ax + b = 0, where $a\ne 0$ and a, b are real numbers."

Q. In general form of linear equation ax + by + c = 0 where a and b are