simplify this expression by combining like terms. 1.2y + 2.8y + 0.4

Explanation:

Step1: Combine like terms (terms with (y))

$$1.2y + 2.8y=(1.2 + 2.8)y$$ $$1.2+2.8 = 4$$

Step2: Keep the constant term

The constant term is (0.4)

Answer:

(4y+0.4)