Question

Me ajudem vale 5 essa atividade pra mim passar de ano

Answer 1

1) 4x +12-x = 24 +x

4x -2x = -12 +24

2x= 12

X = 6

B) 2x -3x -3= 8 -2x -4

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

X = 7

C)2x/ 5 -1/4 = X -1/10

8x -5= 20x -2

8x -20x = 5 -2

-12x = 3 •(-1)

12x = 3

X = 3/12

D) X+1/2 = 4/7 + x-1/4

14x +14 = 16 + 7x -7

14x -7x = -14 -7 + 16

7x = -5

X= -5/7

2) X -3y= 9

2x +3y = 6

X = 3y +9

2 (3y +9) + 3y =6

9y +18 + 3y = 6

12y = 18 -6

12y = 12

Y = 1

X- 3 • 1 = 9

X -3 = 9

X= 6

B) X = 3y

2x - 4y = 6

2• 3y -4y =6

6y -4y = 6

2y = 6

Y= 3

X= 3•3

X=9