Question

b) x-5=8
c)2x+14=16+x
D)5x-2=6+x-5+3x
E)4x+2-x=-18+2x
F)2x+3=15
G) 7x-1=13
H)4x+2=-18
I)15-x-7-4x=18
J) -3x+15-4x-2=-8
me ajude por favor

Answer 1

Olá,
Nesse tipo de questão basta separar os números das incógnitas.

a) x = 13 (8+5). R = X = 13 
b) x (2x-x) = 1 (16-14) . R = X = 2
c) 5x-2=6+x-5+3x . R = X = 3
d) 4x + 2 - x = -18 + 2x. R = X = -20
e) 2x + 3 = 15. R = X = 6
f) 7x - 1 = 13. R = X = 2 
g) 4x + 2 = -18. R = X = -5
h) 15-x-7-4x=18. R = X = -8
i) -3x + 15 - 4x - 2 = - 8 . R = X = -3

Answer 2

b)x-5=8
x=8-5
x=3

c)2x+14=16+x
2x-x=16-14
x=2

d)5x-2=6+x-5+3x
5x-3x-x=6-5+2
x=3

e)4x+2-x=-18+2x
4x-x-2x=-18-2
x=-20

f)2x+3=15
2x=15-3
2x=12
x=12/2
x=6

g)7x-1=13
7x=13+1
7x=14
x=14/7
x=2

h)4x+2=-18
4x=-18-2
4x=-20
x=-20/4
x=-5

i)15-x-7-4x=18
-x-4x=18-15+7
-5x=10
x=10/-5
x=-2
j)-3x+15-4x-2=-8
-3x-4x=-8-15+2
-7x=-21
x=-21/-7
x=3

pronto!!!