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6 x 3 = 18
10 :2 =5
18 + 5 = 23
16 +7 = 23
3x+1/2y= 23
x+y=16
6x+y=46
-x-y=-16
6x+y=46
5x=30
x=6
y=16-6=10
x=6
y=10
x+y=16
3x+0,5y=16+7
x+y=16
3x+0,5y=23/×10
x+y=16/×(-5)
30x+5y=230
-5x-5y=-80
30x+5y=230
----------------
25x=150/:25
x=6
x+y=16
6+y=16
y=16-6
y=10
spr.
x+y=16
6+10=16
3x+0,5y=23
3×6+0,5×10=23
18+5=23