preciso das contas por favor ;)
6x - 5 + 5x = 10x + 6
6x + 5x - 10x = 6 + 5
11x - 10x = 11
=> x = 11
Soluções para a tarefa
Resposta:
a) 2y - 3y - 3 = 8 - 2y + 4
-y + 3 = 12 - 2y
2y - y = 12 - 3
y = 9
b) 6x - 5 + 5x = 10x + 6
6x + 5x - 10x = 6 + 5
x = 11
c) 6x + 12 = 4x + 24
6x - 4x = 24 - 12
2x = 12
x = 12/2
x = 6
d) 4x - 10x - 10 - 2x + 4 = 0
4x - 10x - 2x = 10 - 4
-8x = 6
x = - 6/8 |simplificando = -3/4|
e) 2x - 2 = 5x - 6x + 12
2x - 5x + 6x = 12 + 2
3x = 14
x = 14/3
f) 7x + 5x - 10 + 3x + 12 = 0
7x + 5x + 3x = 10 - 12
15x = -2
x = -2/15
Espero ter ajudado! :D
Resposta:
a) 2y -3 (y-1) =8-2 (y-2)
2y -3y +3 = 8 -2y +4
-y +3 = 12-2y
-y +2y = 12 -3
y =9
b) 6x - 5.(1 - x) = 10x + 6
6x - 5 + 5x = 10x + 6
6x + 5x - 10x = 6 + 5
11x - 10x = 11
=> x = 11
c) 3.(2x + 4) = 4.(x + 6)
6x + 12 = 4x + 24
6x - 4x = 24 - 12
2x = 12
x = 12/2
x = 6
d) 4x-10(x+1)-2(x-2)=0
4x - 10x - 10 - 2x + 4 = 0
-6x - 2x - 6 = 0
-8x - 6 = 0
-6 =8x
-6 / 8 = x
- 3/4 = x
e) 2 ( x - 1 ) = 5x - 3 ( 2x - 4 )
2x - 2 = 5x - 6x + 12
2x - 5x + 6x = 12 + 2
3x = 14
x = 14/3
f) 7x + 5 (x-2) + 3(x+4)=0
7x + 5x - 10 + 3x + 12 =0
15 x + 2=0
15 x = - 2
x= - 2/15
Beijinhos...
2y -3y +3 = 8 -2y +4
-y +3 = 12-2y
-y +2y = 12 -3
y =9