Question

ME AJUDEMMMMMMM I. Resolva as seguintes equações do 1° grau:
1) 7x +1 -5x = 9
2) y +9y + 5 = -15
3) 17x-1= 15x + 3
4) 16 - x= x + 25
5) 20x - 13 = 20 + 9x
6) 21x + 1 = 11x + 6
7) 9x - 23 = 13x - 27
8) 5 - X-22 = 4x - 11 - 6x
9) 3-1. (3x - 6) = 2x +1.(4- x)
10) 4.(x - 2) = 4+2.(x - 1)
11) 7x - 3.(x - 2) = 3.(x + 4)
12) 2.(y-2) + 5.(2- y) = - 3. (2y + 2)
13) 2.(1 - m) +1 = 3.(m - 3) - 2m
14) 5.(m + 1) - 3.(2m + 1) = 4.(5 - m)
15) - 3.(x - 2) - 1.(-4x + 1) + 10 = 0​

Answer 1

1)

2x = 8

x = 4

2)

10y = -20

y = -2

3)

2x = 4

x = 2

4)

-9 = 2x

-9/2 = x

5)

11x = 33

x = 3

6)

10x = 5

x = 1/2

7)

4 = 4X

1 = X

8)

-x +2x = 11 -5

x = 6

9)

3 -3x +6 = 2x +4 -x

9 -4 = 3x +x

5/4 = x

10)

4x -8 = 4 +2x -2

4x -2x = 2 +8

2x = 10

x = 5

11)

7x -3x +6 = 3x +12

4x -3x = 12 -6

x = 6

12)

2y -4 +10 -5y = -6y -6

2y +y = -6 -6

y = -12/3 = -4

13)

2 -2m +1 = 3m -9 -2m

3 +9 = 3m

12/3 = m

4 = m

14)

5m +5 -6m -6 = 20 -4m

-m +4m = 20 +1

m = 21/3 = 7

15)

-3x +6 +4x -1 +10 = 0

x +15 = 0

x = -15