Question

a) 2x - 50 = 30 b) 5x - 60 = 2x - 15 c) 12x +18 = 42 + 8x d) x + 25 = 70 e) 6x - 40 = - 4 me ajudem ​

Answer 1

Resposta:

a)X= 40 b)X= 15 c)X= 6 d)X= 45 e)X= 6

Explicação passo a passo:

a) 2x - 50 =30

2x= 50 + 40

2x= 80

x= 80/2 = 40

b) 5x - 60 =2x -15

5x - 2x = 60 - 15

3x = 45

x = 45/3 = 15

c) 12x + 18 = 42 + 8x

12x - 8x = 42 -18

4x = 24

x = 24/4 = 6

d) x + 25 = 70

x = 70 - 25

x = 45

e) 6x - 40 = - 4

6x = 40 - 4

6x = 36

x = 36/6 = 6