Question

Choose the best definition for the following phrase: combining like terms.

A letter that holds the place for some unknown value in mathematics.

A process where you must look for terms that have identical variable parts and then combine their coefficients.

A process where if two things are equal, one can be put in the place of the other and nothing will change.

Terms that have identical variable parts.

Answer 1

i would go with this one

A process where you must look for terms that have identical variable parts and then combine their coefficients.

pretty weird question though...

Answer 2

for example:

2x + 7 + 45x + 67y - 54y + x^2

combine like terms

Answer 3

Find 3x - y - 3z if x = -2, y = 1, and z = -2. helllllp