Question

.In which step below does a mistake first appear in

simplifying the expression
0.5(-40a + 20) – 8(a + 6) + 24(a - 12)?
Step 1: -20a + 10 - 8(a + 6) + 24(a - 12)
Step 2: -20a + 10 - 80 - 48 + 24(a - 12)
Step 3: -20a + 10 - 80 - 48 + 24a + 288
Step 4:-4a + 250

Answer 1

step 2

Explanation:

from -8(a+6) to -80 - 48 is incorrect

when you multiply -8 x a it's -8a not -80