a)
3x – 1 = 5 – 4x – 1
3x-1=-4x+5-1
3x-1=-4x+4
3x+4x=4+1
7x=5 |:7
x=5/7
b)
4x – 6 = - 3x - 8
4x+3x=-8+6
7x=-2 |:7
x=-2/7
c)
-2 (x+3) + 4(2x + 3) = -3x + 6
-2x-6+8x+12=-3x+6
-2x+8x-6+12=-3x+6
6x+6=-3x+6
6x+3x=6-6
9x=0 |:9
x=0
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a)
3x – 1 = 5 – 4x – 1
3x-1=-4x+5-1
3x-1=-4x+4
3x+4x=4+1
7x=5 |:7
x=5/7
b)
4x – 6 = - 3x - 8
4x+3x=-8+6
7x=-2 |:7
x=-2/7
c)
-2 (x+3) + 4(2x + 3) = -3x + 6
-2x-6+8x+12=-3x+6
-2x+8x-6+12=-3x+6
6x+6=-3x+6
6x+3x=6-6
9x=0 |:9
x=0