August 2018 3 431 Report
2 podkresl w jednakowy sposób wyrazy podobne i zapisz krócej podaną sumę

a) 2a + 3b - c - 4a - 3b + 2c =

b) 3x - 2y + 3,5x - y + 2 + 0,5y =

c) xy + 3x - y +1 - 2xy - 2x + y + 1 =

d) x²+ 2xy-3y ² -2x ² - y²- x ²+ 2xy =

e)
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