Question

6) Resolva as seguintes equações:
a)2/3x=4
b)5/4x=-2
c)-2/4x=2
d)5/2x=4
e)3/4x=10​

Answer 1

Resposta:

a) 6

b) -1,6

c)-4

d)1,6

e)13,333

Explicação passo-a-passo:

a)

$\frac{2}{3} x=4\\2x=4*3\\x=\frac{4*3}{2} =6$

b)

$\frac{5}{4} x=-2\\5x=-2*4\\x=\frac{-2*4}{5} =-1,6$

c)

$\frac{-2}{4} x=2\\-2x=2*4\\x=\frac{2*4}{-2} =-4$

d)

$\frac{5}{2} x=4\\5x=4*2\\x=\frac{4*2}{5} =1,6$

e)

$\frac{3}{4} x=10\\3x=10*4\\x=\frac{10*4}{3} =13,333$

Answer 2

Resposta:

a)x=6

b)x=-8/5

c)x=8/-2

d)x=8/5

e)x=13,3

Explicação passo-a-passo:

a) 2x/3=4

4.3=2x

12=2x

x=12/2

x=6

b) 5x/4 = -2

5x = -8

x = -8/5

c)-2x/4=2

-2x = 8

x= 8/-2

d)5x/2=4

5x=8

x=8/5

e)3x/4=10

3x=40

x=40/3

x=13,3