Which of the following are like terms in this expression? 12a-7+7a+12b

Step-by-step explanation:

in order to be like terms, they have to have the same variable (and exponent, if there is any) ... or be just a constant with no variables (just a number)

like terms in 12a - 7 + 7a + 12b are:

12a and 7a ... because they have the exact same variable (a)

12b ... no like terms

-7 ... no like terms

so ur answer is : 12a and 7a

12a and 7a are the like terms