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2m=-22₊2
2m=-20
m=-10 ⇒ Rpta: m=-10
2. 3x-9=27
3x=27₊9
3x=36
x=12 ⇒ Rpta: x=12
3.4a-2=-14
4a=-14₊2
4a=-12
a=-3 ⇒ Rpta : a=-3
4.6x-2=-24
6x=-24₊2
6x=-22
x=-3.66 ⇒ Rpta:-3.66
5.24x-3=18
24x=21
x=21/24
x=7/8
2m= -22+2
2m= -20
m= -20/2
m= -10
Entonces 2(por)-10 +-2= -22