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3x - 2y = -5
x = 2 - 3y
3 (2 - 3y) - 2y = -5
x = 2- 3y
6 - 9y - 2y = -5
x = 2 - 3y
-11y = -11 / : (-11)
x = 2 - 3y
y = 1
x = 2 - 3*1
y = 1
x = -1
y = 1
Mam nadzieję, że pomogłam ;D