ajuda pf
Considerando que as balanças abaixo estão em equilíbrio,calcule o valor de x
Anexos:
![](https://pt-static.z-dn.net/files/db1/bb8bc4b8518e41f8da90a7062c530a25.png)
![](https://pt-static.z-dn.net/files/d12/8761f48c9fc502b6ef65e24e688de917.png)
Soluções para a tarefa
Respondido por
1
a) x + x + 5 = 13
2x = 13 - 5
2x = 8
x =4
b) 3 + 1 + 4x = 8 + 5 + 2x
4 + 4 x = 13 + 2x
4x - 2x = 13 -4
2x = 9
x = 4,5
2x = 13 - 5
2x = 8
x =4
b) 3 + 1 + 4x = 8 + 5 + 2x
4 + 4 x = 13 + 2x
4x - 2x = 13 -4
2x = 9
x = 4,5
Respondido por
2
Bom dia!
Solução!
Primeira balança!
![x+x+5=13\\\\\
2x+5=13\\\\\\
2x=13-5\\\\
2x=8\\\\\
x= \dfrac{8}{2} \\\\\\
x=4 x+x+5=13\\\\\
2x+5=13\\\\\\
2x=13-5\\\\
2x=8\\\\\
x= \dfrac{8}{2} \\\\\\
x=4](https://tex.z-dn.net/?f=x%2Bx%2B5%3D13%5C%5C%5C%5C%5C%0A2x%2B5%3D13%5C%5C%5C%5C%5C%5C%0A2x%3D13-5%5C%5C%5C%5C%0A2x%3D8%5C%5C%5C%5C%5C%0Ax%3D+%5Cdfrac%7B8%7D%7B2%7D+%5C%5C%5C%5C%5C%5C%0Ax%3D4)
Segunda balança!
![3+1+4x=8+5+2x\\\\\
4+4x=13+2x\\\\\
4x-2x=13-4\\\\\
2x=9\\\\\
x= \dfrac{9}{4}\\\\\\\\\
\boxed{Resposta:x= \dfrac{9}{4}} 3+1+4x=8+5+2x\\\\\
4+4x=13+2x\\\\\
4x-2x=13-4\\\\\
2x=9\\\\\
x= \dfrac{9}{4}\\\\\\\\\
\boxed{Resposta:x= \dfrac{9}{4}}](https://tex.z-dn.net/?f=3%2B1%2B4x%3D8%2B5%2B2x%5C%5C%5C%5C%5C%0A4%2B4x%3D13%2B2x%5C%5C%5C%5C%5C%0A4x-2x%3D13-4%5C%5C%5C%5C%5C%0A2x%3D9%5C%5C%5C%5C%5C%0Ax%3D+%5Cdfrac%7B9%7D%7B4%7D%5C%5C%5C%5C%5C%5C%5C%5C%5C%0A%5Cboxed%7BResposta%3Ax%3D+%5Cdfrac%7B9%7D%7B4%7D%7D+)
Bom dia!
Bons estudos!
Solução!
Primeira balança!
Segunda balança!
Bom dia!
Bons estudos!
a8049f34:
a segunda balança eu tenho que dividir ou é só 9:4 mesmo?
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