Question

Resolvas as equações
a) x / 2 - x / 4= 1 / 2

b) x / 4 + 7 = x / 2 + 5

c) x / 3 + 4= 2x

d)x / 6 + x / 4 = x / 3 - 1

Answer 1

Explicação passo-a-passo:

a) x/2-x/4=1/2

2x/4-x/4=2/4

(2x-x)/4=2/4

(2x-x)=2

x=2

b)x/4+7=x/2+5

x/4-x/2=-2

(x-2x)/4=-4/4

-x=-4

x=4

c)x/3+4=2x

x/3-2x=-4

(x-6x)/3=-12/3

-5x=-12

x=12/5

d)x/6+x/4=x/3-1

(4x+6x)/24=8x/24-24/24

10x=8x-24

2x=-24

x=-12

Answer 2

a) x/2-x/4=1/2

2x/4-x/4=2/4

(2x-x)/4=2/4

(2x-x)=2

x=2

b)x/4+7=x/2+5

x/4-x/2=-2

(x-2x)/4=-4/4

-x=-4

x=4

c)x/3+4=2x

x/3-2x=-4

(x-6x)/3=-12/3

-5x=-12

x=12/5

d)x/6+x/4=x/3-1

(4x+6x)/24=8x/24-24/24

10x=8x-24

2x=-24

x=-12