Question

Equação
a) 8x – 43 = 65

b) 23x -16 = 14 – 17x

c) 4.(x+3) – x = 24 + x

d) 7x + 80 = 4x – 7

e) 4x + 2 = 16

f) x + 2x = 24

g) 5(3x – 9 + 5)

h) 3x + 12 = 27

i) 2x – 5 = x + 10

j) 5 – (4x + 2) = 8 + 2(x – 1)















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Answer 1

Resposta:

a)8x - 43 = 65

8x = 65 + 43

8x = 108

x = 108 ÷ 8

x = 13,5

b)23x -16 = 14 – 17x

23x + 17x = 14 + 16

40x=30

x= 30 ÷ 40

x= 0,75

c)4.(x+3) – x = 24 + x

4x + 12 - x = 24 + x

4x - x - x =24 -12

2x =12

x=6

d)7x + 80 = 4x – 7

7x - 4x = -7 - 80

3x=-87

x=-29

e)4x + 2 = 16

4x=16 - 2

4x=14

x=3,5

f) x + 2x = 24

3x=24

x=24÷3

x=8

g)5(3x – 9 + 5)

15x - 45 + 25

15x=-45 + 25

15x=-20

x=-20 ÷ 15

x=-1,33

h)3x + 12 = 27

3x=27 - 12

3x=15

x=5

i)2x – 5 = x + 10

2x - x=10 + 5

1x=15

x=15

j)5 - (4x + 2) = 8 + 2(x - 1)

20x + 10=8 + 2x - 2

20x - 2x=8 - 2 - 10

18x=-4

x=-4 ÷ 18

poderia me colocar como melhor resposta?