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2. -1,5a=-0,5a-2,5
-a=-2,5
a=2,5
3. -4k-6
4. 5x-5
5. -2k+6m-7
6. -x+3y
7. -13y
2.0,5a-2a=9-0,5a - 11,5 0,5a-2a+0,5a=9-11,5 -a=-2,5
3. -14k + 9k-13 +k+3+4 = -4k-6
4.2x-4+3x-2=-5x-6
5. -3k+2m + 5m _7+ k -m=-2k-6m-7
6.x - 3y - 2x+ 6y = -x+3y
7.2y - 5 - 3y - 4 - 8y+9=-9y