y=2x+y
The expression: y = 2x + y contains several variables so we pick x for resolution
Let's solve in ℝ: 2x + y = y
2x + y -y = 0
ⓘ Like terms are grouped by adding their coefficients: y -y = 0
2x + 0 = 0
ⓘ Adding 0 changes nothing: 2x + 0 = 2x
2x = 0
We simplify the expression by 2
⇥Let's solve in ℝ: x = 0
▶Solution found: x = 0