Question

SOCORRO EU DOU DINHEIRO NO PAY PAL SE FIZER ESSA TAREFA PRA MIM SOBRE : REVISÃO DE EQUAÇÕES DE 1°GRAU 1) X + x + x = 78 * 2) 5x – 3x = 30 * 3) x + 5 = 8 * 4) x - 4 = 3 * 5) x + 6 = 5 * 6) x -3 = - 7 * 7) x + 9 = -1 * 8) x + 28 = 11 * 9) x - 109 = 5 * 10) x - 39 = -79 * 11) 8y – 9 = 23 * 12) 6x = 2x + 16 * 13) 2x + 3x + 4x = 189 * 14) 3x + 2x + 1 = 6 * 15) 5x – 4 – 3x = - 16 * 16) X – 19 = 133 * 17) 3x + 8 = 2 * 18) 5y – 41 = -6 * 19) 2x – 5 = x + 1 * 20) 2x + 3 = x + 4 * 21) 5x + 7 = 4x + 10 * 22) 4x – 10 = 2x + 2 * 23) 2x + 1 = 4x – 7 * 24) 16x – 1 = 12x + 3 * 25) 22x + 5x + 7x = 40 * 26) 15x + 34 – 3x = 124 * 27) 12- 3x + 5x = 346 * 28) - x = 3x + 8 * 29) 8 – x = 2 + x * 30) x + 2x + 5x + 10x +7x = 625 *

Answer 1

Resposta:

Olá, espero te ajudar! ^ w ^

Explicação passo-a-passo:

1)

x + x + x = 78

3x = 78

x = 78/3

x = 26

2)

5x - 3x = 30

2x = 30

x = 30/2

x = 15

3)

x + 5 = 8

x = 8 - 5

x = 3

4)

x - 4 = 3

x = 3 + 4

x = 7

5)

x + 6 = 5

x = 5 - 6

x = -1

6)

x - 3 = -7

x = -7 + 3

x = -4

7)

x + 9 = -1

x = -1 -9

x = -10

8)

x + 28 = 11

x = 11 - 28

x = -17

9)

x - 109 = 5

x = 5 + 109

x = 114

10)

x - 39 = -79

x = -79 + 39

x = -40

11)

8y - 9 = 23

8y = 23 + 9

8y = 32

y = 32/8

y = 4

12)

6x = 2x + 16

6x - 2x = 16

4x = 16

x = 16/4

x = 4

13)

2x + 3x + 4x = 189

9x = 189

x = 189/9

x = 21

14)

3x + 2x + 1 = 6

5x + 1 = 6

5x = 6 - 1

5x = 5

x = 5/5

x = 1

15)

5x – 4 – 3x = -16

2x - 4 = -16

2x = -16 + 4

2x = -12

x = -12/2

x = -6

16)

X – 19 = 133

x = 133 + 19

x = 152

17)

3x + 8 = 2

3x = 2 - 8

3x = -6

x = -6/3

x = -2

18)

5y – 41 = -6

5y = -6 + 41

5y = 35

y = 35/5

y = 7

19)

2x – 5 = x + 1

2x = x + 1 + 5

2x - x = 1 + 5

x = 6

20)

2x + 3 = x + 4

2x = x + 4 - 3

2x - x = 4 - 3

x = 1

21)

5x + 7 = 4x + 10

5x = 4x + 10 - 7

5x - 4x = 10 - 7

x = 3

22)

4x - 10 = 2x + 2

4x = 2x + 2 + 10

4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6

23)

2x + 1 = 4x – 7

2x = 4x - 7 - 1

2x - 4x = -7 -1

-2x = -8

x = -8/-2

x = 4

24)

16x – 1 = 12x + 3

16x = 12x + 3 + 1

16x - 12x = +3 +1

4x = 4

x = 4/4

x = 1

25)

22x + 5x + 7x = 40

34x = 40

x = 40/34

26)

15x + 34 – 3x = 124

15x - 3x = 124 - 34

12x = 124 - 34

12x = 90

x = 90/12 ou 7,5

27)

12- 3x + 5x = 346

-3x + 5x = 346 - 12

2x = 346 - 12

2x = 234

x = 234/2

x = 117

28)

- x = 3x + 8

-x - 3x = 8

-4x = 8

x = 8/-4

x = -2

29)

8 - x = 2 + x

-x = 2 + x - 8

-x - x = 2 - 8

-2x = -6

x = -6/-2

x = 3

30)

x + 2x + 5x + 10x + 7x = 625

25x = 625

x = 625/25

x = 25

Bom estudo! ♥️