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x + y = 16
3x + ½y = 16 + 7
x = 16 - y
3x + ½y = 23
x = 16 - y
3(16 - y) + ½y = 23
x = 16 - y
48 - 3y + ½y = 23
x = 16 - y
-2,5y = -25 | : (-2,5)
x = 16 - y
y = 10
x = 16 - 10
y = 10
x = 6
y = 10
Odp: Szukane liczby to 6 i 10
{3x+0,5y=23 /*2
{x+y=16
{6x+y=46 -> y=46-6x
x+46-6x=16 /-46
-5x=-30
x=6
y=16-x
{y=10
{x=6
ODP> te liczby to 6 i 10