proszę o rozwiązanie zadania : 3a+a+a=(-1)+7+4
3a+a+a=(-1)+7+4
5a=10 /:5
a=2
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3a+a+a=(-1)+7+4
5a=10 /:5
a=2
a+4=6 / -4
a=2
16-3b=14-2b /+2b
16-b=14 /-16
-b=-2 / :(-1)
b=2
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