Question

1)2x +10 =20
2)4x + 50 = 2x+100
3)5x + 100 = -400
4)6x -140 = 100
5)2x =x+10
6)10x =5x+500
7)2 + x= -x
8)x + 8 = 12

Answer 1

Resposta:

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Explicação passo a passo:

2x + 10 = 20

2x = 20 - 10

2x = 10

x = 10/2

x = 5

2) 4x + 50 = 2x + 100

4x - 2x = 100 - 50

2x = 50

x = 50/2

x = 25

3) 5x + 100 = - 400

5x = - 400 - 100

5x = - 500

x = -500/5

x = -100

4) 6x -140 = 100

6x = 100 + 140

6x = 240

x = 240/6

x = 40

5) 2x = x + 10

2x - x = 10

x = 10

6) 10x = 5x + 500

10x - 5x = 500

5x = 500

x = 500/5

x = 100

7) 2 + x= -x

x - x = 2

-2 + x - x

x = -1

8) x + 8 = 12

x = 12 - 8

x = 4

Espero ter ajudado!