Question

resolva as equações do 1° grau

1)
$\: 2 \times + 5 - 5 \times = - 1$
2)
$5 + 6 \times = 5 \times + 2$
3)
$\times + 2 \times - 1 - 3 = \times$
4)
$- 3 \times + 10 = 2 \times + 8 + 1$
5)
$5 \times - 5 + \times = 9 + \times$
6)
$7 \times - 4 - \times = - 2 + 8 - 3 \times$

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Answer 1

1) 2x+5-5x=-1

2x-5x=-1-5

-3x=-6

-x=6/-3

-x=-2 .(-1)

x=2

2) 5+6x=5x+2

6x-5x=2-5

x=-3

3)x+2x-1-3=x

3x-x=1+3

2x=4

x=4/2

x=2

4)-3x+10=2x+8+1

-3x-2x=9-10

-5x=-1 .(-1)

5x=1

x=5/1

x=1

5)5x-5+x=9+x

6x-x=9+5

5x=14

x=14/5

x=2,8

6)7x-4-x=-2+8-3x

6x+3x=6+4

9x=10

x=10/9

x=1,1