Question

ME AJUDEM POR FAVOR
Responda as equaçoes.

A)5x+3=4x+21

B)3x+2=2x+27

C)6m-4=5m-14

D)7y-3=5y-25

E)-5y+3=3y-19

F)5x-19x=16-2

G)-7y-18=4y+3

H)7y-3=-3y-13

I)-18a+15=20a+13

J)14a+19=-2a-1

OBS: ( E necessario montar as contas )

Answer 1

Resposta:

a)5x+3=4x+21

5x-4x=21-3

x=18

b)3x+2=2x+27

3x-2x=27-2

x=25

c)6m-4=5m-14

6m-5m= -14+4

m= -10

d)7y-3=5y-25

7y-5y= -25+3

2y= -22

y= -22÷2

y= -11

e)-5y+3=3y-19

-5y-3y= -19-3

-2y= -22 ×(-1)

2y=22

y=22÷2

y=11

f) 5x-19x=16-2

-14x=14

x=14/-14

x= -1

g)-7y-18=4y+3

-7y-4y=3+18

-11y=21

y=21/-11

h)7y-3=-3y-13

7y+3y= -13+3

4y= -10

y= -10/4

i)-18a+15=20a+13

-18a-20a=13-15

-38a= -2

a=-2/-38

j)14a+19= -2a-1

14a+2a= -1-19

16a= -20

a= -20/16