Low-birthweight i believe.
4b - 7 + 2b + 11 and b + 3 + b + 1 are congruent.
You add the common factors in each problem: 2b + 4 = 2b + 4
Y=2x+1 I think this is correct but I don’t know how to do equations very well
Answer:
an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).