Rozwiąż układy równań.
{a=b
{2a+b=9
{2b+b=9
{3b=9
{b=3
{a=3
e){u=4v
{5u-v=10
{5·4v-v=10
{u=4v
{20v-v=10
{19v=10
{v=10/19
{u=4· 10/19=40/19=2²/₁₉
{v=¹⁰/₉
{u=2²/₁₉
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{a=b
{2a+b=9
{2b+b=9
{a=b
{3b=9
{a=b
{b=3
{a=3
e){u=4v
{5u-v=10
{5·4v-v=10
{u=4v
{20v-v=10
{u=4v
{19v=10
{u=4v
{v=10/19
{u=4· 10/19=40/19=2²/₁₉
{v=¹⁰/₉
{u=2²/₁₉