Question

7) Resolva as equações:
h) 3x + 6 = 9
a) X + 7 = 9
b) X-4 = 5
1) 4x = 20
c)
2X-8=4
j) x + 7 = 3
d) 5x + 9 = 4
e)
4x = 12
f) 5x = 25
g) X-4 = 2​

Answer 1

Explicação passo-a-passo:

h) 3x + 6 = 9

3x = 9 - 6

3x = 3

x = 3/3

x = 1

a) x + 7 = 9

x = 9 - 7

x = 2

b) x - 4 = 5

x = 5 + 4

x = 9

1) 4x = 20

x = 20/4

x = 5

c) 2x - 8 = 4

2x = 4 + 8

2x = 12

x = 12/2

x = 6

j) x + 7 = 3

x = 3 - 7

x = -4

d) 5x + 9 = 4

5x = 4 - 9

5x = -5

x = -5/5

x = -1

e) 4x = 12

x = 12/4

x = 3

f) 5x = 25

x = 25/5

x = 5

g) x - 4 = 2

x = 2 + 4

x = 6

Answer 2

Resposta:

h)1

a)2

b)9

1)5

c)6

j)4

d)1

e)3

f)5

g)6

Explicação passo-a-passo:

h) 3x +6=9 a) x+7=9 b) x-4=5

3x=9-6 x=9-7 x=5+4

3x = 3 x=2 x=9

x=3 ÷ 3

x= 1

1) 4x=20 c)2x-8=4 j) x+7=3

x= 20 ÷ 4 2x=4+8 x= 3-7

x=5 2x=12 x= 4

x=12÷2

x=6

d) 5x+9=4 e) 4x=12 f)5x=25

5x=4-9 x=12 ÷4 x=5

5x=5 x=3

x= 5÷5

x=1

g) x-4=2

x=2+4

x=6