1) 7x-5=3(x+2)
2)2.(3x-8)=3x+5
3)4(x-1)+3(x+5)=2x+41
4)5x-11+2.(2x+3)=2x+9
Les agradecería mucho si me ayudaran
Respuestas
Respuesta dada por:
4
Hola! :)
1.
![7x - 5 = 3(x + 2) \\ \\ 7x - 5 = 3x + 6 \\ \\ 7x - 3x = 6 + 5 \\ \\ 4x = 11 \\ \\ x = \frac{11}{4} 7x - 5 = 3(x + 2) \\ \\ 7x - 5 = 3x + 6 \\ \\ 7x - 3x = 6 + 5 \\ \\ 4x = 11 \\ \\ x = \frac{11}{4}](https://tex.z-dn.net/?f=7x+-+5+%3D+3%28x+%2B+2%29+%5C%5C++%5C%5C+7x+-+5+%3D+3x+%2B+6+%5C%5C++%5C%5C+7x+-+3x+%3D+6+%2B+5+%5C%5C++%5C%5C+4x+%3D+11+%5C%5C++%5C%5C+x+%3D++%5Cfrac%7B11%7D%7B4%7D+)
2.
![2(3x - 8) = 3x + 5 \\ \\ 6x - 16 = 3x + 5 \\ \\ 6x - 3x = 5 + 16 \\ \\ 3x = 21 \\ \\ x = \frac{21}{3} = 7 2(3x - 8) = 3x + 5 \\ \\ 6x - 16 = 3x + 5 \\ \\ 6x - 3x = 5 + 16 \\ \\ 3x = 21 \\ \\ x = \frac{21}{3} = 7](https://tex.z-dn.net/?f=2%283x+-+8%29+%3D+3x+%2B+5+%5C%5C++%5C%5C+6x+-+16+%3D+3x+%2B+5+%5C%5C++%5C%5C+6x+-+3x+%3D+5+%2B+16+%5C%5C++%5C%5C+3x+%3D+21+%5C%5C++%5C%5C+x+%3D++%5Cfrac%7B21%7D%7B3%7D++%3D+7)
3.
![4(x - 1) + 3(x + 5) = 2x + 41 \\ \\ 4x - 4 + 3x + 15 = 2x + 41 \\ \\ 7x + 11 = 2x + 41 \\ \\ 7x - 2x = 41 - 11 \\ \\ 5x = 30 \\ \\ x = \frac{30}{5} = 6 4(x - 1) + 3(x + 5) = 2x + 41 \\ \\ 4x - 4 + 3x + 15 = 2x + 41 \\ \\ 7x + 11 = 2x + 41 \\ \\ 7x - 2x = 41 - 11 \\ \\ 5x = 30 \\ \\ x = \frac{30}{5} = 6](https://tex.z-dn.net/?f=4%28x+-+1%29+%2B+3%28x+%2B+5%29+%3D+2x+%2B+41+%5C%5C++%5C%5C+4x+-+4+%2B+3x+%2B+15+%3D+2x+%2B+41+%5C%5C++%5C%5C+7x+%2B+11+%3D+2x+%2B+41+%5C%5C++%5C%5C+7x+-+2x+%3D+41+-+11+%5C%5C++%5C%5C+5x+%3D+30+%5C%5C++%5C%5C+x+%3D++%5Cfrac%7B30%7D%7B5%7D++%3D+6)
4.
![5x - 11 + 2(2x + 3) = 2x + 9 \\ \\ 5x - 11 + 4x + 6 = 2x + 9 \\ \\ 9x - 5 = 2x + 9 \\ \\ 9x - 2x = 9 + 5 \\ \\ 7x = 14 \\ \\ x = \frac{14}{7} = 2 5x - 11 + 2(2x + 3) = 2x + 9 \\ \\ 5x - 11 + 4x + 6 = 2x + 9 \\ \\ 9x - 5 = 2x + 9 \\ \\ 9x - 2x = 9 + 5 \\ \\ 7x = 14 \\ \\ x = \frac{14}{7} = 2](https://tex.z-dn.net/?f=5x+-+11+%2B+2%282x+%2B+3%29+%3D+2x+%2B+9+%5C%5C++%5C%5C+5x+-+11+%2B+4x+%2B+6+%3D+2x+%2B+9+%5C%5C++%5C%5C+9x+-+5+%3D+2x+%2B+9+%5C%5C++%5C%5C+9x+-+2x+%3D+9+%2B+5+%5C%5C++%5C%5C+7x+%3D+14+%5C%5C++%5C%5C+x+%3D++%5Cfrac%7B14%7D%7B7%7D+%3D+2+)
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ClaudeWalker:
Gracias genio :D
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