Pb is a line segment on a number line. it has endpoints at -2 and 12. what is the coordinate of its midpoint

The x-coordinate of the midpoint is the mean of the two given points:

midpoint = (-2 + 12) / 2, or 10/2, or 5. Notice that this 5 is 7 units to the right of -2 and 7 units to the left of 12, confirming that 5 is indeed the midpoint.

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent