Question

Resolva seguintes equações:

a) x-3=7

b)x+4=10

c)3×=12

d)7×-1=13

e)6×-10=2×+14

f)2 (×-1)-7=16​

Answer 1

Resposta:

a) x-3=7

x=7+3

x=10

b)x+4=10

x=10-4

x=6

c)3x=12

x=12/3

x=4

d)7x-1=13

7x=13+1

7x=14

x=14/7

x=2

e)6x-10=2x+14

6x-2x=14+10

4x=24

x=24/4

x=6

f)2 (x-1)-7=16

2x-2-7=16

2x=16+9

2x=25

x=25/2

Answer 2

Explicação passo-a-passo:

a) X - 3 = 7

x = 7+3

x = 10

b) x + 4 = 10

x = 10 - 4

x = 6

c) 3x = 12

x = 12/3

x = 4

d) 7x - 1 = 13

7x = 13 + 1

7x = 14

x = 14/7

x = 2

e) 6x - 10 = 2x + 14

6x - 2x = 14 + 10

4x = 24

x = 24/4

x = 6

f) 2 ( x - 1 ) - 7 = 16

2x - 2 - 7= 16

2x = 16 +9

2x = 15

x = 15/2