determine : a)3/4/1/3 =1/2/x b)5/x =4/x+1 c)x/y =3/4 sabendo que x+y =28
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Ola Rejane
a)
3/4/1/3 = 1/2/x
1/4 = 1/2x
2x = 4
x = 4/2 = 2
b)
5/x = 4/(x + 1)
5x + 5 = 4x
5x - 4x = -5
x = -5
c)
x/y = 3/4
x + y = 28
3 + 4 = 7
28/7 = 4
3/4 = (3*4)/(4*4) = 12/16
.
a)
3/4/1/3 = 1/2/x
1/4 = 1/2x
2x = 4
x = 4/2 = 2
b)
5/x = 4/(x + 1)
5x + 5 = 4x
5x - 4x = -5
x = -5
c)
x/y = 3/4
x + y = 28
3 + 4 = 7
28/7 = 4
3/4 = (3*4)/(4*4) = 12/16
.
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