Two opposite sides of a parallelogram are 3x-8 and 10x+13. Find the measure of all sides

13 x + 5

Step-by-step explanation:

We need to organize this expression into groups of like terms, so we can combine them easier.

We need to combine like terms in this expression by adding up all numerical coefficients and copying the literal part, if any.

3x + 10x + - 8 + 13

No numerical coefficient implies value of 1.

Numerical 'like' terms will be added.