2 . (x + x - 28) = 200 Qual é o numero incógnita dessa equação?
2 . (x + x - 28) = 200
2(2x-28)=200
4x-56=200
4x=256
x=256/4
x=64
se tiver duvida substitui o 64 no lugar do x.
4x=200+56
2 . (2x- 28) = 200
4x -56=200
4x - 56 = 200
4x = 200 + 56
4x = 256
x = 256/4
x = 64
2.(X+X-28) = 200
2X + 2X - 56 = 200
4X = 200 + 56
4X = 256
X = 256 : 4
X = 64
CONFERINDO.
2.(64 + 64 - 28 ) = 200
128 + 128 - 56 = 200
256 - 56 = 200
200 = 200
2.(x+x-28)=200----> 2.(2x-28)=200---->(aplicando distributiva) 4x-112=200---->4x=200+112---> 4x = 312------>x=312:4-----> x = 78----> S ={78}
2 . ( x + x - 28) = 200
2 . ( 2x - 28) = 200
4x = 200 - 56
4x = 144
x = 144/ 4
x = 36
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Verified answer
2 . (x + x - 28) = 200
2(2x-28)=200
4x-56=200
4x=256
x=256/4
x=64
se tiver duvida substitui o 64 no lugar do x.
2(2x-28)=200
4x-56=200
4x=200+56
4x=256
x=256/4
x=64
2 . (x + x - 28) = 200
2 . (2x- 28) = 200
4x -56=200
4x=256
x=64
4x - 56 = 200
4x = 200 + 56
4x = 256
x = 256/4
x = 64
2.(X+X-28) = 200
2X + 2X - 56 = 200
4X = 200 + 56
4X = 256
X = 256 : 4
X = 64
CONFERINDO.
2.(64 + 64 - 28 ) = 200
128 + 128 - 56 = 200
256 - 56 = 200
200 = 200
2.(x+x-28)=200----> 2.(2x-28)=200---->(aplicando distributiva) 4x-112=200---->4x=200+112---> 4x = 312------>x=312:4-----> x = 78----> S ={78}
2 . ( x + x - 28) = 200
2 . ( 2x - 28) = 200
4x - 56 = 200
4x = 200 - 56
4x = 144
x = 144/ 4
x = 36
Faz a conta aew e me fala a resposta.
Responde a minha
http://br.answers.yahoo.com/question/index;_ylt=Ag...
x = 36