Can someone pls solve these questions i will mark them as brainiest

[tex]\huge\mathfrak\blue{answer}[/tex]
1) Simplifying
6m + 5 = 20
Reorder the terms:
5 + 6m = 20
Solving
5 + 6m = 20
Solving for variable 'm'.
Move all terms containing m to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 6m = 20 + -5
Combine like terms: 5 + -5 = 0
0 + 6m = 20 + -5
6m = 20 + -5
Combine like terms: 20 + -5 = 15
6m = 15
Divide each side by '6'.
m = 2.5
Simplifying
m = 2.5
2) There is a theorem which says exterior angle of a triangle is equal to sum of opposite interior angles.
So, let the other interior angle be x
According to the theorem
x+70 = 120°
x=50°
3) i will solve and tell you in the comments
4) Let the number be x
5x - 68 = x
5x - x = 68
4x = 68
x = 68/4 = 17
5) i will solve this too
(mark me brainliest please I need 2 more)
THANK YOU