Mathematics - Algebra - Linear Equations - Equations with variables on both sides - Which Plan Is Cheaper?

Two phone plans: Plan A costs $20/month + $0.10/text. Plan B costs $30/month + $0.05/text. 'At how many texts are they the same price?' Set up: 20+0.10x = 30+0.05x. Solve: 0.05x=10, x=200. Do 3 'which is better' scenarios that naturally create equations with x on both sides.