Question

a)x+2x=-1-3=x
b)-3x+10=2x+8+1
c)5x-5+x=9x
d)3x-2x=3x+2
e)2x-1=-3+x+4
f)2-4x=32-18x+12
g)10-9x+2x=2-3x


me ajude....

Answer 1

A) Poste o item corretamente

B)b)-3x+10=2x+8+1
-3x-2x=-10+8+1
-5x=-1
5x=1
x=1/5


C) 5x-5+x=9x
5x+x-9x=-5
-3x=-5
3x=5
x=5/3

D)3x-2x=3x+2
3x-3x-2x=2
-2x=2
2x=-2
x=-1

E)2x-1=-3+x+4
2x-x=+1-3+4
x=2

F)2-4x=32-18x+12
-4x+18x=32+12-2
14x=42
x=42/14
x=3

G)10-9x+2x=2-3x
-9x+2x+3x=-10+2
-4x=-8
4x=8
x=2

Answer 2

Vou começar pela b) pois a primeira esta com um sinal errado.


b) -3x + 10 = 2x + 8 + 1

-3x - 2x = 9 - 10
-5x = -1
x = -1/-5
x = 1/5
.
.
c) 5x - 5 + x = 9x

5x + x - 9x = 5
-3x = 5
x = 5/-3
.
.
d) 3x - 2x = 3x + 2

x - 3x = 2
-2x = 2
x = 2/-2
x = -1
.
.
e) 2x - 1 = -3 + x + 4

2x - x = -3 + 4 + 1
x = 2
.
.
f) 2 - 4x = 32 - 18x + 12

-4x + 18x = 32 + 12 - 2
14x = 42
x = 42/14
x = 3
.
.
g) 10 - 9x + 2x = 2 - 3x

-9x + 2x + 3x = 2 - 10
-7x + 3x = -8
-4x = -8
x = -8/-4
x = 2




★Espero ter ajudado! tmj