Rozwiąż układy równań metodą podstawiania! ;DD
{ m= 0,3n
{ m+n= 65
{ k+4d= 16,5
{ 2k + 6d= 29
{ x+y= 32
{ 3y + x= 52
{ 2a+3b=42
{ a+b+9= 27
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{ m= 0,3n
{ m+n= 65
{m=0,3n
{0,3n+n=65
{m=0,3n
{1,3n=65|*10
{m=0,3n
{13n=650|:13
{m=0,3n
{n=50
{m=15
{n=50
{ k+4d= 16,5
{ 2k + 6d= 29
{k=16,5-4d
{2*(16,5-4d)+6d=29
{k=16,5-4d
{33-8d+6d=29
{k=16,5-4d
{-2d=-4|:(-2)
{k=16,5-4d
{d=2
{k=16,5-4*2
{d=2
{k=8,5
{d=2
{ x+y= 32
{ 3y + x= 52
{x=32-y
{3y+32-y=52
{x=32-y
{2y=20|:2
{x=32-y
{y=10
{x=32-10
{y=10
{x=22
{y=10
{ 2a+3b=42
{ a+b+9= 27
{2a+3b=42
{a=27-b-9
{2a+3b=42
{a=18-b
{2*(18-b)+3b=42
{a=18-b
{36-2b+3b=42
{a=18-b
{b=6
{a=18-6
{b=6
{a=12
Mam nadzieję że dobrze:)