How do you combine #(4d-2) - (d+1)#?

1 Answer

#3d-3#

Explanation:

You distribute the negative, then combine the like terms. The "minus" outside the second parentheses is really a negative sign that applies to BOTH terms. So it would become:

#4d-2-d-1#

Combine like terms, making sure to carry the sign in front of each number or variable.

#4d-d" "# and #" "-2-1#

so

#3d-3#

#3d# and #3# are two separate things, so you cannot go any farther. ( do not subtract the #3# from the #3d#!)