Resolva estas equações:
A)2(2x-4)+5(X+4)
B)50+(3x-4)=2(3x-4)+26
C)12+(4x-2)=5(2x+26
D)10+(2x-6)=(3x+2)
E)(14x-2)=6(9x-1).
Respostas
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A) 2(2x-4)+5(X+4)
4x-8+5x+20
9x+12
x= -12/9
x= -4/3
B)50+(3x-4)=2(3x-4)+26
150x-200=6x-8+26
150x-6x=-8+26+200
144x=218
x= 218/144
x=109/122
C)12+(4x-2)=5(2x+26)
12 +4x-2 = 10x+ 130
4x - 10x=130-10
-6x=120
x=120/-6
x=-20
D)10+(2x-6)=(3x+2)
10+2x-6=3x+2
2x-3x=2-4
-x=-2 * (-1)
x=2
E)(14x-2)=6(9x-1)
14x-2= 54x-6
14x-54x=-6+2
-40x =-4
x=-4/-40
x=1/40
4x-8+5x+20
9x+12
x= -12/9
x= -4/3
B)50+(3x-4)=2(3x-4)+26
150x-200=6x-8+26
150x-6x=-8+26+200
144x=218
x= 218/144
x=109/122
C)12+(4x-2)=5(2x+26)
12 +4x-2 = 10x+ 130
4x - 10x=130-10
-6x=120
x=120/-6
x=-20
D)10+(2x-6)=(3x+2)
10+2x-6=3x+2
2x-3x=2-4
-x=-2 * (-1)
x=2
E)(14x-2)=6(9x-1)
14x-2= 54x-6
14x-54x=-6+2
-40x =-4
x=-4/-40
x=1/40
Mfreitas100:
Obrigado! ajudou muito
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