Question

Resolva as equações 1° grau

a) 2x-11=25
b)7+4x=12
c)2x+9=8-4x
d)5.(x+6)=-32
e)4x+9=8x-6
f)2.(4x-1)=28
g)9-×=11
h)7x-8=15-3x
i)6x+5=2.(x-1)
j)4=9+x​

Answer 1

Resposta:

A) 4x - 3 - x + 8 = 11

B) 6.(x - 2) = 12

C) 9 + 2.(5x - 4) = 21

D) 10x + 4.(3 - 2x) - 6 = 8

E) 3.(5 + 3x) + 5.(- x - 1) = 22

F) 2.(9x - 4) - 7 + (6 - 5x).3 = 18

Explicação passo-a-passo:

A) 4x - 3 - x + 8 = 11

B) 6.(x - 2) = 12

C) 9 + 2.(5x - 4) = 21

D) 10x + 4.(3 - 2x) - 6 = 8

E) 3.(5 + 3x) + 5.(- x - 1) = 22

F) 2.(9x - 4) - 7 + (6 - 5x).3 = 18

Answer 2

Resposta:

a) 2x-11=25

2x = 36

x = 18

b)7+4x=12

4x = 5

x = $\frac{5}{4}$ ou x=1.25

c)2x+9=8-4x

6x+9=8

6x = -1

x= $-\frac{1}{6}$ ou x= -0.16

d)5.(x+6)=-32

x+6 = $\frac{32}{5}$

x = $\frac{2}{5}$ ou x=0.4

e)4x+9=8x-6

-4x+9= -6

-4x= -15

x= $\frac{15}{4}$ ou x=3.75

f)2.(4x-1)=28

4x-1=14

4x=15

x=$\frac{15}{4}$ ou x=3.75

g)9-×=11

-x=2

x= -2

h)7x-8=15-3x

10x-8=15

10x=23

x=$\frac{23}{10}$ ou x=2.3

i)6x+5=2.(x-1)

6x+5=2x-2

4x+5= -2

4x= -7

x= -$\frac{7}{4}$ ou x= -1.75

j)4=9+x​

9+x=4

x= -5

Espero ter ajudado e bons estudos.