Simplify the expression: $2a+5a$2a+5a
Which of the following is equal to $2a$2a?
$a\cdot a$a·a
$2+a$2+a
$a+a$a+a
$a^2$a2
Using the concept from part (a), add $2a$2a and $5a$5a together by first converting them into sets of $a$a.
Simplify $-2m-9m$−2m−9m.
Which of following options correctly simplifies the expression "$11m+8n+14m$11m+8n+14m"?
What expression should go in the space to make the statement true?