Question

resolva as equações de 1 grau:

A) 5X=16-3X

B) X+X+8=54

C) 7X-2=5X+18

D) 12X-4=3+10X

E) -X-4=2X

F) 8X=5X+45

G)5=X+3

H) 72=48+X

I) 7=10+X

J) 15=X+20

K) -7=X+50 ​

Answer 1

a)5x=16-3x

=5x+3x=16

=8x=16

x=16/8

x=2

b) 2x+8=54

2x=54-8

2x=46

x=46/2=26

c)7x-5x=18+2

2x=20

x=20/2=10

d)12x-10x=3+4

2x=7

x=7/2

e)-x-2x=4

-3×=4

x=4/-3

f)8x-5x=45

3x=45

x=45/3=15

g)-x=+3-5

-x=-2

x=2