15 * 4 points
15. In which step below does a mistake first appear in simplifying the expression
0.5(-12c + 6) - 3(c + 4) + 100 – 5)?
Step 1: -6c + 3 – 3(c 4) + 10(c. 5)
Step 2: -6c + 3 - 3c - 12 + 10(6 - 5)
Step 3: -6c + 3 – 3c - 12 + 100 - 50
Step 4: 70-41
A Step 1
lue
B Step 2
C Step 3
D Step 4

divide by 5

step-by-step explanation:

60/5 = 12

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!