а) 8x+2=9-4x
12x=7
x=7/12
б)2y-19=7y+31
-5y=50
y=-10
в)12x+2=x+6
11x=4
x=4/11
г)15-5x=12x-25
40=17x
x=40/17
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а) 8x+2=9-4x
12x=7
x=7/12
б)2y-19=7y+31
-5y=50
y=-10
в)12x+2=x+6
11x=4
x=4/11
г)15-5x=12x-25
40=17x
x=40/17