January 2019 2 20 Report
Proszę sprawdźcie mi to czy dobrze rozwiązałam:
a) 4 (3a + 5) + 3 (5a - a) = 7+8a+3
b) 2(7p-3)-5(3p-1) = -3
c)-5(2-3m)-2m+8 = 3(2+4m)+8
d)2x(3x-4)+x(5-2x) = 5x-1
e)3u(2-4u)-5u(u+3) = 5u-1
f)-5t (2t-1)-2t(3-5t) = -10t-2
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