Question

Resolva as equações:
A.-6y+4=-2
B.2x÷5=6
C.z-5=12
D.12x+8-3x=10+2x
E.3x-5=2x+7
F.3x-36=0
G.4z-10=4-3z
H.20-3×(x+5)=5
I.2x-3×(4-x)=12
J.4×(x+2)-3×(-4-x)=2-x
K.x-x-1/3=x+2/2
L.x-1/2-5/3=x+2/3
M.2x+2/2-x+4/5=2x-6/10

Answer 1

Resposta:

Explicação passo-a-passo:

A. -6x+4=-2

-6x=-2-4

-6x=-6 (-1)

6x=6

x=1

B.2x/5=6

2x/5=30/5

2x=30

x=15

C. z-5=12

z=12-5

z=7

D.12x+8-3x=10+2x

12x-3x-2x=10-8

7x=2

x=2/7

E.3x-5=2x+7

3x-2x=7+5

x=12

F.3x-36=0

3x=36

x=12

G.4z-10= 4-3z

4z+3z= 4-10

7z= -6

z= -6/7

H.20-3.(x+5)=5

20-3x-15=5

-3x=5-20+15

-3x=-15+15

-3x=0 (-1)

3x=0

x=0

I.2x-3.(4-x)=12

2x-12+3x=12

5x=12+12

5x=24

x=24/5

J.4.(x+2)-3.(-4-x)=2-x

4x+8+12+3x=2-x

8x=2-8-12

8x=-6-12

8x= -18

x= -18/8

K.x-x-1/3=x+2/2

-1/3=3x/3+3/3

-3x=3+1

-3x=4 (-1)

3x=-4

x= -4/3

L.x-1/2-5/3=x+2/3

6x/6-3/6-10/6=6x/6+4/6

6x-6x=4+3+10

0x=17

M.2x+1/1-x+4/5=2x-6/10

20x/10+10/10+10x/10+8/10=20x/10-6/10

-10x= -6-10-8

-10x= -24 (-1)

10x= 24

x= 24/10