January 2019 1 9 Report
Temat:Dodawanie i odejmowanie sum algebraicznych.
-5x-4y-y-7x-9y=
0,5 x -(2+9-0,5a)-11,5=
-14k+9k-13+(k+3+4k)=
-(-3k+2m+5m)-7+k=
(2y-5)-(3y-4-8y+9)
proszę o pomoc ;( na jutro! ;( daje naj!
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