Question

a)35/25 = 30/x b) 2x/15 = 6/9 c) 2x/3 = 8/6 d) 6/7 = 3x/28 ops quem responder certinho ganharar todos os meus pontos;) boa sorte!

Answer 1

Resposta:

a( x=150/7

b( x=5

c( x=2

d( x=8

Explicação passo-a-passo:

a( 30/x=35/25

30/x=5(7)/25

30/x ⋅ 5⋅7/5⋅5

30/x = 7/5

30⋅5=x⋅7

x⋅7=30⋅5

x⋅7=30⋅5

x⋅7=150

x⋅7/7=150/7

x=150/7

b( 15/2 ⋅ 2x/15=15/2 ⋅ 6/9

1/2 ⋅ (2x)= 15/3 ⋅ 6/9

1/2 ⋅ (2(x))= 15/3 ⋅ 6/9

x=15/3 ⋅ 6/9

x=3(5)/2 ⋅ 6/9

x=3⋅5/2 ⋅ 6/3⋅3

x=5/2 ⋅ 6/3

x=5/2 ⋅ 2(3)/3

x=5⋅ 3/3

x=5⋅3/3

x=15/3

x=5

c( 3/2 ⋅ 2x/3=3/2 ⋅ 8/6

1/2⋅ (2x)= 3/2 ⋅ 8/6

1/2⋅ (2(x))= 3/2 ⋅ 8/6

x= 3/2 ⋅ 8/6

x= 3/2 ⋅ 8/3(2)

x= 1/2 ⋅ 8/2

x=1/2 ⋅ 2(4)/2

x=4/2

x=2

d( 3x/28=6/7

28/3 ⋅ 3x/28=28/3 ⋅ 6/7

1/3⋅(3x)=28/3 ⋅ 6/7

1/3⋅(3(x))=28/3 ⋅ 6/7

x=28/3 ⋅ 6/7

x=7(4)/3 ⋅ 6/7

x=4/3 ⋅ 6

x=4/3 ⋅ (3(2))

x=4×2

x=8