Question

PRECISO PRA HJ AINDA 14) x - 9 = -17 15) 2x = -10 16) 3x + 2 = 4x - 11 17) 2x = 6 18) x = - 5 19) -2x + 14 = 3x - 1 21) x/2 = 12/3 22) 5m - 7 - 2m - 5 = 0 23) 4t + 9 = 3t - 5 24) y - 8 + 5y = - 3 - y + 7 25) 3. (x – 3) + 5 = x + 12 26) x + 4.(x - 1) = 9 - 2.(x + 3) 27) 2.(3x - 1) + 2 .(3 - x)= 0 28) -10 + 4 - 2x = -4x - 7 29) 2.(x - 2)+ 5.(2 - x) + 6.(x + 1) = 0 30) 3. (x - 2) - (1 - x) = 13 31) x - (x + 1) = 12 - (3x - 2) 32) x/3 - 1 + 3/4 = x/2 - 1/4

Answer 1

Explicação passo-a-passo:

14) x = -17 +9

x = -8

15) 2x = - 10

x = -10/2

x = -5

16) 3x + 2 = 4x -11

2 + 11 = 4x - 3x

13 = x

17) 2x = 6

x = 6/2

x = 3

18) x = -5

esse já tá respondido

19) -2x + 14 = 3x - 1

-2x - 3x = -14 - 1

-5x = -15 .(-1)

5x = 15

x = 15/5

x = 3

20) ?

21) x/2 = 12/3

x = 12/3 .(2)

x = 24/3

x = 8

22) 5m - 7 - 2m - 5 = 0

3m -12 = 0

3m = 12

m = 12/3

m = 4

23) 4t + 9 = 3t

4t - 3t = -9

t = -9

24) y - 8 + 5y = - 3 - y + 7

y + 5y + y = -3 + 7 + 8

6y + y = 4 + 8

7y = 12

y = 12/7

25) 3(x - 3) + 5 = x + 12

3x - 9 + 5 = x + 12

3x - x - 4 = 12

2x = 12 + 4

2x = 16

x = 16/2

x = 8

26) x + 4(x - 1) = 9 - 2(x + 3)

x + 4x - 4 = 9 - 2x - 6

5x - 4 = -2x + 3

5x + 2x = 3 + 4

7x = 7

x = 7/7

x = 1

27) 2(3x - 1) + 2(3 - x) = 0

6x - 2 + 6 - 2x = 0

4x + 4 = 0

4x = -4

x = -4/4

x = -1

28) -10 + 4 - 2x = -4x - 7

-2x + 4x = -7 -6

2x = -13

x = -13/2

29) 2(x - 2) + 5(2 - x) + 6(x + 1) = 0

2x - 4 + 10 -5x + 6x + 6 = 0

3x = -12

x = -12/3

x = -4