Answer:
1) m + 2 = 6
Subtract 2 from both sides,
⇒m = 6 - 2
⇒m = 4, True
2) 3m - 1 = 11
Add 1 on both sides,
⇒3m = 11 + 1
⇒3m = 12
Divide both sides by 3,
⇒m = 4, True.
3) 2m + 5 = 13
Subtract 5 from both sides,
⇒2m = 13 - 5
⇒2m = 8
Divide both sides by 2,
⇒m = 4, True.
4) m² + 4 = 20
Subtract 4 from both sides,
⇒m² = 20 - 4
⇒m² = 16
Squaring both sides,
⇒m = 4, True.
Therefore, For all the equations, [m = 4] is the solution.
