Which number line represents -0.8 + 2.4

1.6

Step-by-step explanation:

if you are at -0.8 on a number line, you have to move 0.8 units to get to 0.  you then have to continue to move an additional 1.6 units to get a total of 2.4 units.

-0.8, -0.7, -0.6, -0.5, -0.4, -0.3,  -0.2, -0.1, 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9and so on.

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