Matemáticas, pregunta formulada por carlitosarias1005, hace 1 año

x+5=9
3−x=4
2x=−7
36x=6
x+3=3x−6
x+7+2=8−9
x+6=3−x+4
2x−3=6(x+2)
3(x+1)+2(x−2)=9
2−(4x−3)=7

3x+1=3−(2−2x)
3x+2−(4x−1−9x)=6x−1
2x+2−3x+5=3+2
6+3(3x−5+7x)=−(2x−1)
2x−1=5x+8
yo se que es mucho pero ayudenmeeeeeeeeee

Respuestas a la pregunta

Contestado por sonia2302
6

Explicación paso a paso:

x + 5 = 9 \\ x = 9 - 5 \\ x = 4 \\  \\ 3 - x = 4 \\ - x = 4 - 3 \\  - x = 1 \\ x =  - 1 \\  \\   2x =  - 7 \\  x =  -  \frac{7}{2}  \\  \\  36x = 6 \\ x =  \frac{6}{36}  \\ x =  \frac{1}{6}

x + 3 = 3 x  - 6 \\ x - 3x =  - 6 - 3 \\  - 2x =  - 9 \\ x =  \frac{9}{2}   \\ \\ x + 7 + 2 = 8 - 9  \\ x + 9 =  - 1 \\ x =  - 1 - 9 \\ x =  - 10

x + 6 = 3 - x + 4 \\x  + 6 = 7 - x \\ x + x = 7 - 6 \\ 2x = 1 \\ x =  \frac{1}{2} \\  \\  2x - 3 = 6(x + 2)  \\ 2x - 3 = 6x + 12 \\2x - 6x = 12 + 3 \\  - 4x  = 15 \\ x =  -  \frac{15}{4}  \\ \\ 3(x + 1) + 2(x - 2) = 9 \\ 3x + 3 + 2x  - 4 = 9 \\ 5x - 1 = 9 \\ 5x = 9 + 1 \\ 5x = 10 \\ x =  \frac{10}{5}  \\ x = 2

2 - (4x - 3) = 7 \\ 2 - 4x + 3 = 7  \\ 5 - 4x = 7 \\  - 4x = 7 - 5 \\  - 4x = 2 \\ x =  -  \frac{ 2}{4} \\ x =  -  \frac{1}{2} \\   \\ 3x + 1 = 3 - (2 - 2x) \\ 3x + 1 = 3 - 2 + 2x \\ 3x - 2x = 1 - 1 \\  x = 0\\

3x + 2 - (4x - 1 - 9x) = 6x - 1 \\ 3x + 2 - ( - 5x - 1) = 6x - 1 \\ 3x + 2  + 5x + 1 = 6x - 1 \\  8x + 3 = 6x - 1 \\ 8x - 6x =  - 1 - 3 \\ 2x =  - 4 \\ x =  - 4 \div 2 \\ x =  - 2

3x + 2 - (4x - 1 - 9x) = 6x - 1 \\ 3x + 2 - 4x + 1 + 9x = 6x - 1 \\8 x + 3 = 6x - 1 \\ 8x - 6x =  - 1 - 3 \\  2x =  - 4 \\ x =  - 4 \div 2 \\ x =  - 2

2x + 2 - 3x + 5 = 3 + 2 \\  - x + 7 = 5 \\  - x = 5 - 7 \\ -  x =  - 2 \\ x = 2 \\ \\  6 + 3(3x - 5 + 7x) =  - (2x - 1) \\6 + 9x - 15 + 21x =  - 2x + 1 \\  - 9 + 30x =  - 2x  + 1 \\ 30x + 2x = 1 + 9 \\ 32x = 10 \\ x =  \frac{10}{32} \\ x =  \frac{5}{16} \\   \\  x - 1 = 5x + 8x - 5x \\ x - 1 = 8x \\ x - 8x = 1 \\  - 7x = 1 \\  - 7x = 1 \\ x =  -  \frac{1}{7}


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