Question

calcule o valor de X nas seguintes proporções ​

Answer 1

a)

35x= 25×5

35x= 125

x= 125÷35

$x = \frac{25}{7}$

b)

10x=7×50

10x= 350

x= 350÷10

x= 35

c)

49= 7(x-6)

49= 7x-42

7x= 49+42

7x= 91

x=91÷7

x=13

d)

30(5x+3)=10×(-21)

150x+90=-210

150x=-210-90

150x=-300

x= -300÷150

x=-2

e)

5×54= 30(x+4)

270=30x+120

30x= 270-120

30x= 150

x= 150÷30

x= 5