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6x=3+12
6x=15 (:6)
x= 2.5
A.
2x-4=1
2x=1+4
2x=5 (:2)
x=2,5
B.
6x-10=5
6x=10+5
6x+15 (:6)
x=16/5=2,5
C.
x-2=3
x=3+2
x=5
D.
12x-10=30
12x=30+10
12x=40 (:12)
x=10/3. ( 10/3 w przybliżeniu = 3.33 )