Question

State which of the following are equation (with a variable) given reason and tell your answer. identify the variable from the equation with a variable.
$(7\ast 3)-19=8$

Answer 1

$(7\times 3)-19=8$ (variable absent)

$\Rightarrow 21-19=8$

$2\ne 8$ absurdity

It is an absurdity not equation as it doesn't have a variable.