a.
4u+2=u-7
4u-u=-2-7
3u=-9/:3
u=-3
spr: 4razy(-3) +2 = -3-7
b)2w+3=4w-5
2w-4w=-3-5
-2w=-8/:-2
-w=-4
spr: 2razy(-4)+3=4razy(-4)-5
c)-t+2=4+5t
-t-5t=4+(-2)
-6t=2/:-6
-t= -2/3
spr: -2/3+2=4+5razy-2/3
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a.
4u+2=u-7
4u-u=-2-7
3u=-9/:3
u=-3
spr: 4razy(-3) +2 = -3-7
b)2w+3=4w-5
2w-4w=-3-5
-2w=-8/:-2
-w=-4
spr: 2razy(-4)+3=4razy(-4)-5
c)-t+2=4+5t
-t-5t=4+(-2)
-6t=2/:-6
-t= -2/3
spr: -2/3+2=4+5razy-2/3