rozwiaz ruwnania a ) -2 na dole x = 5- pod spodem 8 b ) c-5 pod spodem 3 = c pod spodem 5 c ) 5 na dole z-4 = 6 na dole z-3
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a )
-2 / x = 5 / 8
5 * x = -2 * 8
5x = -16
x = -16/5
x = -3 i 1/5
b )
(c-5) / 3 = c / 5
3 * c = 5 *(c - 5)
3c = 5c - 25
3c - 5c = -25
-2c = -25
c = -25/-2
c = 12,5
c )
5 / ( z-4) = 6 / (z-3)
6*(z - 4) = 5*(z - 3)
6z - 24 = 5z - 15
6z - 5z = -15 + 24
z = 9
masz tam wszystkie trzy przykłady mam nadzieje że dasz naj ;D