Rozwiąż równanie i sprawdź :
{ 2y - 3 ) -4 ( y -2 ) = 3
2 y -3 - 4 y + 8 = -3
( 2y - 3 ) -4 ( y -2 ) = 3
2 y -3 - 4 y + 8 = 3
2y - 4y = 3 +3 - 8
-2y = -2 \ \-2
y = 1
sprawdzenie :
(2-3) -4 (1-2) = 3
-1 - 4 * - 1 = 3
-1 + 4 = 3
3 = 3
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( 2y - 3 ) -4 ( y -2 ) = 3
2 y -3 - 4 y + 8 = 3
2y - 4y = 3 +3 - 8
-2y = -2 \ \-2
y = 1
sprawdzenie :
(2-3) -4 (1-2) = 3
-1 - 4 * - 1 = 3
-1 + 4 = 3
3 = 3