Question

Resolva as equações
A) x-x/2=1
B) x/3+x/2=15
C) 3x/2-5x=-7
D) x/2+x/4+x/2=4
e)3/4x-1/2x=-2

com cálculo por favor

Answer 1

Oiii

A) x/1 - x/2 = 1/1
2x/2 - 1x/2 = 2/2
2x - 1x = 2
X = 29
S = {2}

B) x/3 + x/2 = 15/1
2x/6 + 3x/6 = 90/6
2x + 3x = 90
5x = 90/5
X = 18
S = {18}

C) 3x/2 - 5x/1 = -7/1
3x/2 - 10x/2 = -14/2
3x - 10x = -14
7x = -14/7
X = -2
S = {-2}

D) x/2 + x/4 + x/2 = 4
4x/8 + 2x/8 + 4x/8 = 32
4x + 2x + 4x = 32
10x = 32/10
X = 3,2
S = {3,2}

E) 3/4x - 1/2x = -2
6x/8 - 4x/8 = -16/8
6x - 4x = -16
2x = -16/2
X = -8
S = {-8}

Espero ter ajudado ^^

Answer 2

a) x-x/2=1 
2x-x=2
x=2

b)x/3+x/2=15
(2x+3x)/6=90/6
5x=90
x=18

c)3x/2-5x=-7
3x-10x=-14
-7x=-14
x=2

d)x/2+x/4+x/2=4
(2x+x+2x)/4 =16/4
5x=16
x=16/5

e)3/4x-1/2x=-2
(3-2x)/4x=-8x/4x
-2x+8x=-3
6x=-3
x=-1/2
d)