Question

Resolva as equações do 1 grau...

a)6 (X-2) = 3(X+3)
b)10 (X+2) =5(X+5)
c)8 (X-3) = 4(X+2)
d)9 (X-2)=3 (X+3)
e)5X - 10 = 3X + 20
f)20X - 15 = 10X + 35
g)6X+10 = 4X + 50
h) 7X-11 = 3X + 33
i) 3 (X-2) = 24
j) 5 (X+2) = 50
k) 10 (X+2) = 80
l) 2 (X-12) = 36.​

Answer 1

Explicação passo-a-passo:

a)6 (X-2) = 3(X+3)

6x -12 = 3x + 9

6x -3x = 9 + 12

3x = 21

x = 21/3

x = 7

b)10 (X+2) =5(X+5)

10x + 20 = 5x +25

10x - 5x = 25 - 20

5x = 5

x = 5/5

x= 1

c)8 (X-3) = 4(X+2)

8x -24 = 4x + 8

8x -4x = 8 + 24

4x = 32

x = 32/4

x = 8

d)9 (X-2)=3 (X+3)

9x -18 = 3x + 9

9x -3x = 9 +18

3x = 27

x = 27/9

x = 3

e)5X - 10 = 3X + 20

5x -3x = 20 +10

2x = 30

x = 30/2

x= 15

f)20X - 15 = 10X + 35

20x -10x = 35 +15

10x = 50

x = 50/10

x = 5

g)6X+10 = 4X + 50

6x -4x = 50 -10

2x = 40

x =40/2

x = 20

h) 7X-11 = 3X + 33

7x -3x = 33 + 11

4x = 44

x = 44/4

x = 11

i) 3 (X-2) = 24

3x -6 = 24

3x = 24 + 6

x = 30/3

x= 10

j) 5 (X+2) = 50

5x +10 = 50

5x = 50 -10

5x = 40

x = 40/5

x= 8

k) 10 (X+2) = 80

10x + 20 = 80

10x = 80 -20

10x = 60

x = 60/10

x = 6

l) 2 (X-12) = 36.

2x -24 = 36

2x = 36 -24

2x = 12

x= 12/2

x= 6