1) 12-3x=5x+8 -3x-5x=8-12 2x=-4/:2 x=-2
2) x = 16
3) x = -1,5
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Answers & Comments
(-8x)=(-4)
x=4/8
2) 21-3x=5+2x
(-3x)-2x=5-21
(-5x)=(-16)
x= 16/5
3) (-7x)-11x=(-21)-15
(-18x)=(-36)
x=2
1) 12-3x=5x+8
-3x-5x=8-12
2x=-4/:2
x=-2
2) x = 16
3) x = -1,5