Question

Negative three times a number is at least 57.

Answer 1

Answer:

given a number x, negative 3 times that number is -3x. If this has to be at least 57, it means that -3x must be greater than or equal to 57:

$-3\geq 57$ Dividing both sides by -3 solves the equation, but we have to switch the inequality sign because we're dividing by a negative number:

$x \leq \frac{57}{3} =19$