Final answer:
The algebraic expression simplifies to “x - 2y” after combining like terms by adding the coefficients of x and y terms respectively.
Step-by-step explanation:
To combine like terms in the algebraic expression 2y³-2y³+2y+4x-7x+4x-4y, we first identify terms that have the same variables raised to the same power. In this expression:
- The terms 2y³ and -2y³ are like terms and cancel each other out because they are equal in magnitude and opposite in sign.
- The terms 4x, -7x, and 4x are like terms and can be combined by adding their coefficients.
- The terms 2y and -4y are like terms and can be combined similarly.
Combining the x terms:
4x - 7x + 4x = 1x, which can be simplified to just x.
Combining the y terms:
2y - 4y = -2y
The simplified expression after combining like terms is:
x - 2y.