Resolva a equação, considerando U = Q: 2X+ 10 = X - 30 - 8 - 4...

1_|

12x-4/6-8x-3/9=x+2x+5/3

mmc=>

6,9,3/3
2,3,1/2
1,3,1/3
1,1,1

mmc=>3.2.3=>3.6=18

12x-4/6-8x-3/9=x+2x+5/3

3.(12x-4)/18-2.(8x-3)/18=18x+6.(2x+5)/18

3.(12x-4)-2.(8x-3)=18x+6.(2x+5)

36x-12-16x+6=18x+12x+30

36x-16x+6-12=18x+12x+30

20x-6=30x+30

20x-30x=30+6

-10x=36

x=-36/10

x=(-36)÷2/10÷2

x=- 18/5

2_| balança ×××200g 100g 500g X

4x+200>500+100+x

4x+200>x+60

3_|

letra a :

4.(x+3)>2.(x-1)

4x+13>2x-2

4x-2x>-2-13

2x>-15

x>-15/2

letra b:

3.(x+2)>2.(2x+4)

3x+6>4x+8

3x-4x>8-6

-x>2.(-1)

x<-2

4_|

x+y=6.(-2)
2x-y=24.(1)
|
-2x-2y=-12
2x-y=24
|
(2x-2x)+(-2y-y)=24-12

(0)+(-3y)=12

-3y=12

y=12/-3

y=-4

x+y=6

x=6-y

x=6-(-4)

x=6+4

x=10

x=10 e y=-4

s={10,-4}

espero ter ajudado!

boa noite!​