Question

1.) 3 – 5(5 – 2x) = 5 – (3x + 9) Resposta: ___________________

2.) 3 – 5(1 + 2x) = 5 – (3x – 9) Resposta: ___________________

3.) 10x – 5 (1 – x) = 3 (2x – 2) + 20 Resposta: ___________________

4.) 10x – (1 – x) = 3 (3x + 2) – 20 Resposta: ___________________

5.) 12x – 5 (1 + x) = 3 (2x – 2) – 20 Resposta: ___________________

6.) 3 – (3 – 2x) = 5 + (3x + 9) Resposta: ___________________

7.) 8(x + 3) = –12 (1 – x) Resposta: ___________________

8.) –3(2x – 1) = – 2(x +3) Resposta: ___________________

9.) 8(x – 1) = 8 – 4(2x – 3) – 8 Resposta: ___________________

10.) 3(1 – 2x) = 2(x + 1) + x – 7 Resposta: ___________________

me ajuda

Answer 1

Resposta:

Explicação passo-a-passo:

1) 3-25+10x= 5 - 3x + 9

10x + 3x = 5+9+25-3

13x = 39-3

13x=36

x=36/13

x=2,769 +/- 2,77

2) 3 - 5 +10x = 5 - 3x + 9

10x+3x= 5+9+5-3

13 x = 16

x=16/13

x=1,23

3) 10x -5 + 5x = 6x-6 +20

10x + 5x -6x = -6 + 20 + 5

15x - 6x = -6 + 25

9x = 19

x=2,11

4)10x -1 + x = 9x +6 -20

10x - 9x = -20+6 + 1

x=-13

5) 12x -5 -5x = 6x -6 - 20

12x - 5x - 6x = -6 -20 + 5

12x - 11x = -26 + 5

x= -21

6)3 - 3 + 2x = 5 +3x +9

2x - 3x = 5 + 9 + 3 - 3

-x= 17 - 3

-x = 14 (*-1)

x= -14

7) 8x + 24 = -12 + 12x

8x - 12x = -12-24

-4x = -36  ou (*-1)

x=-36/-4      -------- x= 36/4

x= -32          ------- x= 32

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

-6x + 2x = - 6 - 3

-4x = -9

x = -9/-4

x = -2,25

9) 8x - 8 = 8 - 8x + 12 - 8

8x + 8x = 8 - 8 +12 -8

16x = 4

x=4/16

x= 0,25

10) 3 - 6x = 2x + 2 + x -7

- 6x - 2x - x = 2 - 7 - 3

-9x = -8

x = -8/-9

x= 0,888