Are the following sentences equivalent?
$S \subset T, \:\:\:\: S$ is a subset of $T$
A. Equivalent
B. Not equivalent


Are the following sentences equivalent?
$x - a = b, \:\:\:\: x = a +b$
A. Equivalent
B. Not equivalent


Are the following sentences equivalent?
$x^{2} = a^{2} \:\:\:\: x = a$
A. Equivalent
B. Not equivalent


Are the following sentences equivalent?
$x < 1 \:\:\:\: x^{2} < 1$
A. Equivalent
B. Not equivalent