Răspunsuri

2014-09-16T19:08:08+03:00

x+7=3
x=7-3
x=4
6-x=15
x=15+6
x=21
11-x=14
x=14+11
x=25
-2x=-5
x=-5:-2
x=-2.5
-x+4=-9
-x=-9-4
x=-13

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