Rozwiąż równanie:
1.
{126=9b+6a
{54=2(a+b)+18
126=9b+6a
54=2(a+b)+18
126=9b+6a/:(-3)
54=2a+2b+18
-42=-3b-2b
12=-b+18
b=-12+18
b=6
54=2a+12+18
a2a=-54+12+18
2a=-24/:2
a=-12
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126=9b+6a
54=2(a+b)+18
126=9b+6a/:(-3)
54=2a+2b+18
-42=-3b-2b
54=2a+2b+18
12=-b+18
b=-12+18
b=6
54=2a+12+18
b=6
54=2a+12+18
b=6
a2a=-54+12+18
b=6
2a=-24/:2
b=6
a=-12