Suma tych liczb jest równa 90, a różnica - 30. Jakie to liczby
{x+y=90
{x-y=30
{x=90-y
{90-y-y=30
{-2y=30-90
{-2y=-60
{y=-60:(-2)=30
{x=90-30=60
zatem te liczby to 60 i 30
a+b=90/-b
a-b=-30
a=90-b
90-b-b=-30/-90
-2b=-120/:(-2)
b=60
a=90-60=30
Licze na naj. :)
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{x+y=90
{x-y=30
{x=90-y
{90-y-y=30
{-2y=30-90
{-2y=-60
{y=-60:(-2)=30
{x=90-30=60
zatem te liczby to 60 i 30
a+b=90/-b
a-b=-30
a=90-b
90-b-b=-30/-90
a=90-b
-2b=-120/:(-2)
a=90-b
b=60
a=90-60=30
Licze na naj. :)