Question

9. Resolva as equações abaixo:

a-)x+5=8

b)x - 4 = 3

c)x + 6 = 5

d)x - 7 = -7

e)x + 9 = -1

f)x - 39 = -79

g)10 = x + 8

h)15 = x + 20

i)4 = x -10

j)7 = x + 8

k)x - 1 = 5

l)2x + 4 = 16

m)3x = 15

n)2x = 10

o)3x = -9

p)2x – 2 = 12 – 5x

q)3x – 13 = 8

r)4x – 9 = 23

s)7x – 33 = -12

t)33+ x = 5 – 3x

u)2x = 14

v)7x = -21

w)4x = -12

x)35x = -105

OBRIGADO (◠‿◕)​

Answer 1

Resposta:

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 = 10 - 8 => X = 2

h)15 = x + 20 => x = 20 - 15=> -x = 5 => X = -5

i) 4=x-10 => 4+10=x =>  X=14

j) 7 = x +8 => X+8=7 => X= 7 -8 => X= -1

k) X-1=5 => X=5+1 =>X=6

l) 2x+4=16=> 2x=16-4 => 2x=12 => x=12/2 =>X=6

m) 3x = 15 => 15 ÷ 3x => X=5

o)3x = - 9 => x= -9/3 => x = -3

p) 2x - 2 = 12 - 5x => 2x + 5x = 12 + 2 => 7x = 14 => x = 14/7 => X = 2

q) 3x-13=8 => 3x=8+13 => 3x=21 => X=21÷3 =>X=7

r)4x-9 = 23 => 4x = 23+9 => 4x = 32=> x=  32/4 x = 8

s) 7x - 33 = -12 =>7x = -12 + 33 =>7x = - 21 =>x = 21/7 => x = 3

t) 33+x=5-3x => x+3x=5-33 => 4x= -28 => x= -28/4 => x= -7

u) 2x = 14 => x = 14 : 2 => x = 7

v) 7x = -21 => x = -21/7 => x = -3

w) 4x= -12 => x= -12/4 => x= -3

x) 35x= -105 =>x= -105÷35 =>x= -3

Answer 2

Resposta:

a-)x+5=8 => x= 8-5 => x=3

b)x - 4 = 3 => x= 7

c)x + 6 = 5 => x= -1

d)x - 7 = -7 => x= -7+7 => x=0

e)x + 9 = -1 => x= -10

f)x - 39 = -79 => x= -79 +39 => x=-40

g)10 = x + 8 => x=10-8 => x= 2

h)15 = x + 20 => x=15-20 => x= -5

i)4 = x -10 => x=4+10 => x= 14

j)7 = x + 8 => x= 7-8 => x=-1

k)x - 1 = 5 => x=5+1 => x=6

l)2x + 4 = 16 => 2x=16-4 => 2x= 12 => x=12/2 => x=6

m)3x = 15 => x= 15/3 => x=5

n)2x = 10 => x= 10/2 => x= 5

o)3x = -9 => x= -9/3 => x= -3

p)2x – 2 = 12 – 5x => 2x +5x= 12+2 => 7x=14 => x=14/7 => x=2

q)3x – 13 = 8 => 3x= 8+13 => 3x=21 => x=21/3 => x=7

r)4x – 9 = 23 => 4x=23+9 => 4x= 32 => x=32/4 => x= 8

s)7x – 33 = -12 => 7x= -12+33 => 7x=21 => x=21/7 => x=3

t)33+ x = 5 – 3x => x+3x=5-33 => 4x= -28 => x=-28/4 => x= -7

u)2x = 14 => x=7

v)7x = -21 => x= -21/7 => x= -3

w)4x = -12 => x= -12/4 => x= -3

x)35x = -105 => x= -105/35 => x= -3

Explicação passo a passo: espero ter ajudado