zadania tekstowe układy równańnn zad.1 suma dwóch liczb wynosi 42 róznica tych liczb wynosi 18
Te liczby to 30 i 12
a+b=42 a=42-b
a -b=18
42-b-b= 18
-2b= - 24
b= 12
a+ 12 = 42
a= 30
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Te liczby to 30 i 12
a+b=42 a=42-b
a -b=18
42-b-b= 18
-2b= - 24
b= 12
a+ 12 = 42
a= 30