Question

combine like terms and distributive property
susan carbone
try this one on your own
$12 - (3x + 7) + 10x$
pause the video until you completely solve
multiple-choice question
what is the first step when simplifying?
$12 - (3x + 7) + 10x$
subtract
distribute a -1
rewatch

Explanation:

When simplifying expressions with a subtraction sign in front of parentheses, the first step is to distribute the negative sign (equivalent to distributing -1) across the terms inside the parentheses to remove the grouping symbol.

Answer:

distribute a -1