0.7 (-3/5 - 1/2) = ?

0.3 (5.50 - 6.45) = ?

To answer the first problem, first we have to transfer all of the fractions and decimals into one type of math. It is a personal preference, so for this problem I'll just choose decimals.

0.7 (-0.6 - 0.5)

Next, we must use the distributive property to simplify these decimals.

-0.42 - 0.35

When we subtract these final two values we get:

-0.77 or - 77/100

Now for the second problem, the numbers are all already all in decimal form, so all we have to do is simplify the preexisting numbers.

1.65 - 1.935

When we subtract these final two values, we get:

-0.285 or - 57/200

So, your answers are

#1 = - 0.77 or - 77/100

#2 = - 0.285 or - 57/200