Bonjour pouvez-vouscm'aider à résoudre ces calculs svp?
1)
[tex]30x + 2 = 12[/tex]
2)
[tex]5x + 3 = 3x + 1[/tex]
3)
[tex]3 + 4(2x - 1) = 2 - (2x + 15)[/tex]
4)
[tex] \frac{2}{3}x - \frac{3}{4} = \frac{5}{2}x + \frac{1}{6} [/tex]
1)
[tex]30x + 2 = 12[/tex]
2)
[tex]5x + 3 = 3x + 1[/tex]
3)
[tex]3 + 4(2x - 1) = 2 - (2x + 15)[/tex]
4)
[tex] \frac{2}{3}x - \frac{3}{4} = \frac{5}{2}x + \frac{1}{6} [/tex]
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bonjour;
1)
30x = 12-2
30x = 10
x= 10/30
x = 1/3
2)
5x-3x = 1-3
2x = -2
x= -2/2
x= -1
3)
3+8x -4 = 2-2x -15
8x-2x = 2-15-3+4
6x = -12
x= -12/6
x = -2
4)
2x/3 -5x/2 = 1/6 +3/4
4x/6 -15x/6 = 2/12 +9/12
-11x/6 = 11/12
-11x = 11/12*6
-11x = 66/12
-11x = 11/2
x = (11/12 )/11
x = 12