Question

ecuaciones:
1. 25-2x=3x-35
2. 75-5x=3x+3
3. 5+8x=2x+20
4. 2x-3=x+5
5. 2-6x=3x-1
6. 2(3x-49)=x+14
7. 20=2x-(10-4x)
8. 2(x-2)=-(4-x)
9. 2+5(x-13)=x-3
10. 2x-1=3(2x-15)

Answer 1

Respuesta:

1. 25-2x=3x-35

25 + 35 = 3x + 2x

60 = 5X

60/5 = X

12 = X

2. 75-5x=3x+3

75 - 3 = 3x + 5x

72 = 8x

72/8 = X

8 = X

3. 5+8x=2x+20

8x - 2x = 20 - 5

6x = 15

X = 15/6

X = 5/2

X = 2,5

4. 2x-3=x+5

2x - X = 5 + 3

X = 2

5. 2-6x=3x-1

2 + 1 = 3x + 6x

3 = 9x

3/9 = X

1/3 = X

6. 2(3x-49)=x+14

6x - 98 = X + 14

6x - X = 14 + 98

5x = 112

7. 20=2x-(10-4x)

8. 2(x-2)=-(4-x)

2x - 4 = - 4 + X

2x - X = - 4 + 4

X = 0

9. 2+5(x-13)=x-3

2 + 5x - 65 = X - 3

5x - x = - 3 - 2 + 65

4x = 60

X = 60/4

X = 15

10. 2x-1=3(2x-15)

2x - 1 = 6x - 65

- 1 + 65 = 6x - 2x

64 = 4x

64/4 = X

16 = X