Question

Resolva a equações

A)4y+9=y-6

B)5y+2y-3=3y+y

C)5(2+3y)=4-2(2y+5)

D)x/24-x/12=x-46

E)x-x/2-x/6=6

F)1/3=x/42

Answer 1

A) 4y+9=y-6
4y - y = -6 - 9
3y = -15
y = -15/3 = -5

B)5y+2y-3=3y+y
5y + 2y - 3y - y = 3
7y - 4y = 3
3y = 3
y =3/3 = 1

C) 5(2+3y)=4-2(2y+5)
10 + 15y = 4 -4y - 10
15y + 4y = 4 - 10 - 10
19y = -16
y = -16/19

D) x/24-x/12=x-46
mmc = 24

x - 2x = 24x -24.46
x - 2x - 24x = -1104
-25x = -1104
x = 1104/25

E) x-x/2-x/6=6

mmc = 6

6x - 3x - x = 6.6
2x = 36
x = 36/2 = 18

F)1/3=x/42

1.42 = 3.x
x = 42/3 = 14

Answer 2

A) 4y+9=y-6
4y-y=-9-6
3y=-15
y=-15/3
y=-5

B) 5y+2y-3=3y+y
5y+2y-4y=3
3y=3
y=3/3
y=1

C) 5(2+3y)=4-2(2y-5)
10+15y=4y-10
15y-4y=-10-10
11y=-20
y=-20/11

O resto não me lembro como faz