Question

1 Continue observando o exemplo e respondendo
2 continue respondendo

Answer 1

Resposta:

essa eu tentei mas NN consigo juro se eu soubesse eu falaria juro

Answer 2

2-

b)9x - 2 = 4x + 18

 9x-4x = 18 + 2

 5x = 20

 x=4

c)7x + 1 = 5x-7

7x-5x = -7-1

2x = -8

x=-4

d)4x + 5 = x + 20

4x - x = 20-5

3x=15

x=5

e)7y - 10 y = y +50

 7y-10y-y = 50

-4y=50

(-1) -4y = 50 (-1)

4 y = -50

y = -12,5

f)2x-2 = 12 - 5x

2x + 5x = 12+2

7x=14

x=2

g)33+x=5-3x

x+3x = 5-33

4x = -28

x=-7

3-

a)x+5=8

 x=8-5

 x=3

b)x-4=3

 x=3+4

 x=7

c)x+6=5

 x=5-6

 x=-1

d)x-7=-7

 x=-7+7

x=0

e)x+9=-1

 x = -1-9

 x=-10

f)x-39=-79

x=-79+39

x=-40

g)10=x+8

-x=+8-10

-x=-2

(-1)   -x=-2  (-1)

x=2

h)15=x-20

-x = -20-15

-x = -35

(-1)  -x = -35 (-1)

x=35