Question

com os calculos por favor

Answer 1

f)

20*x=16*(x+1)

20x=16x+16

20x-16x=16x+16-16x

4x=16

4x/4 = 16/4

x = 4

g)

Nenhuma solução

H)

2x/3 = 7/5

2x*(5)=(7)*(3)

10x=21

10x/10 = 21/10

x = 21/10

i)

10 * (1/2) = x * (8/4

$5 = \frac{5}{4} x$

$\frac{5}{4} x = 5$

$(\frac{4}{5}) * \frac{5}{4} x = (\frac{4}{5}) * (5)$

x = 4

j)

$\frac{7}{3} = \frac{2}{x}$

7*x=(2)*(3)

7x=6

$\frac{7x}{7} = \frac{6}{7}$

x = 6/7