4a+7=-3+5a
4a-5a=-3-7
-x=-10
x=10
4+25y=6+2y
25y-2y=6-4
-23y=2
y=-23/2
y=-11целых 1/2
6-2c=8-3c
-2c+3c=8-6
c=2
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4a+7=-3+5a
4a-5a=-3-7
-x=-10
x=10
4+25y=6+2y
25y-2y=6-4
-23y=2
y=-23/2
y=-11целых 1/2
6-2c=8-3c
-2c+3c=8-6
c=2