Question

Uprość wyrażenia algebraiczne : 1. 0,5a - 2a +9 - 0,5a - 11,5 = 2. -14k + 9k - 13 + k +3 +4k = 2. -3k + 2m + 5m - 7 + k - m = 4. 2x - 4 + 3x -2 = 5. x - 3y - 2x + 6y = 6. 2y - 5 - 3y - 4 - 8y + 9 =

Answer 1

a)  0,5a - 2a +9 - 0,5a - 11,5 = -a-2,5 

b) -14k + 9k - 13 + k +3 +4k = 10k -10

c) -3k + 2m + 5m - 7 + k - m = -2k 6m -7

d) 2x - 4 + 3x -2 = 5x -6

e) x - 3y - 2x + 6y = -x +3y 

f)  2y - 5 - 3y - 4 - 8y + 9 = -9y

 

 

 

 

 

Answer 2

 0,5a - 2a +9 - 0,5a - 11,5 =  -1,5a+9-0,5a-11,5= -2a+9-11,5= -2a-2,5

 

 -14k + 9k - 13 + k +3 +4k = -5k-13+k+3+4k= -4k-13+3+4k= -4k-10+4k= -10

 

 -3k + 2m + 5m - 7 + k - m = -3k+7m-7+k-m= -2k+7m-7-m= -2k+6m-7

 

 2x - 4 + 3x -2 =5x-4-2=5x-6

 

 x - 3y - 2x + 6y = -x-3y+6y= -x+3y

 

 2y - 5 - 3y - 4 - 8y + 9 = -y-5-4-8y+9= -y-9-8y+9= -9y-9+9= -9y