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Sa se rezolve ecuatiile:
7x - 11 = 66
8 - 3x = -6
-4 + x = -x
27 - x = 34
5x - 6 = 2x
Va rooooog!!!!


Răspuns :

[tex]7x - 11 = 66[/tex]

[tex]7x = 66 + 11[/tex]

[tex]7x = 77 \: | \div 7[/tex]

[tex]x = 11[/tex]

[tex]8 - 3x = - 6[/tex]

[tex] - 3x = - 6 - 8[/tex]

[tex] - 3x = - 14 \: | \times ( - 1)[/tex]

[tex]3x = 14[/tex]

[tex]x = \frac{14}{3} [/tex]

[tex] - 4 + x = - x[/tex]

[tex]x + x = 4[/tex]

[tex]2x = 4 \: | \div 2[/tex]

[tex]x = 2[/tex]

[tex]27 - x = 34[/tex]

[tex] - x = 34 - 27[/tex]

[tex] - x = 7 \: | \times ( - 1)[/tex]

[tex]x = - 7[/tex]

[tex]5x - 6 = 2x[/tex]

[tex]5x - 2x = 6[/tex]

[tex]3x = 6 \: | \div 3[/tex]

[tex]x = 2[/tex]
1. 7x-11=66
7x=77
x=11
2.8-3x=-6
3x=14
x=4,(6)
3.-4+x=-x
-4=-2x
x=2
4.27-x=34
x=-7
5.5x-6=2x
6=3x
x=2