Question

RESOLVE CADA UMA DAS SEGUINTES EQUACOES

1:c+2c=2+c

2: -x=3x-5

3:5+x=2x

4:2+3a=5a

5:2a-3=10a

6:4x-1=x

7:x=2x+3x

OBS:COLOQUEM AS CONTAS PFV

Answer 1

1)

c + 2c  = 2 + c

2c = 2

c = 2/2

c = 1

2)

-x = 3x - 5

4x = 5

x = 5/4

3)

5 + x = 2x

x = 5

4)

2 + 3a = 5a

2a = 2

a = 2/2

a = 1

5)

2a - 3 = 10a

8a = -3

a = -3/8

6)

4x - 1= x

3x = 1

x = 1/3

7)

x = 2x + 3x

4x = 0

x = 0/4

x = 0

Answer 2

1)
c + 2c = 2 + c
3c = 2 + c
3c - c = 2
2c = 2
c = 2/2
c = 1

2)
- x = 3x - 5
- x - 3x = -5
- 4x = - 5 (-1)
4x = 5
x = 5/4

3)
5 + x = 2x
x - 2x = 5
- x = 5 (-1)
x = -5

4)
2 + 3a = 5a
3a - 5a = -2
-2a = -2 (-1)
2a = 2
a = 2/2
a = 1

5)
2a - 3 = 10a
2a - 10a = 3
- 8a = 3 (-1)
8a = - 3
a = -3/8

6)
4x - 1 = x
4x - x = 1
3x = 1
x = 1/3

7)
x = 2x + 3x
x = 5x
x - 5x = 0
-4x = 0 (-1)
4x = 0
x = 0/4
x = 0