Oblicz równania.
a) 3x - 5 = 4 + 2x
b) -5x - 17 = -9x + 3
c) 2x - 4 + 5x = x + 2
d) 7x + 2 = 5 + 3x + 9
a 3x-5=4+2x
3x-2x=4+5
x=9
b-5x-17=-9x+3
-5x+9x=3+17
4x=20
x=5
c2x-4+5x=x+2
2x+5x-x=2+4
6x=6
x=1
d 7x+2=5+3x+9
7x-3x=9+5-2
4x=12
x=3
l
-5x+9x = 3+17
4x=20 /:4
x= 5
2x+5x-x = 2+4
6x=6 /:6
7x-3x= 5+9-2
4x= 12 /:4
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a 3x-5=4+2x
3x-2x=4+5
x=9
b-5x-17=-9x+3
-5x+9x=3+17
4x=20
x=5
c2x-4+5x=x+2
2x+5x-x=2+4
6x=6
x=1
d 7x+2=5+3x+9
7x-3x=9+5-2
4x=12
x=3
l
a) 3x - 5 = 4 + 2x
3x-2x=4+5
x=9
b) -5x - 17 = -9x + 3
-5x+9x = 3+17
4x=20 /:4
x= 5
c) 2x - 4 + 5x = x + 2
2x+5x-x = 2+4
6x=6 /:6
x=1
d) 7x + 2 = 5 + 3x + 9
7x-3x= 5+9-2
4x= 12 /:4
x=3