Odpowiedź:
Szczegółowe wyjaśnienie:
4x-5-2x+8= 2x+3
3,2k-6k+8-3,2k-20,7= -6k-12.7
-7y-5-3,2y= -10.2y-5
3/5x-a-8/5x-a= -5/5x = -x
5*(8+7x) = 40+35x
(7)*(5x-4)= 35x-28
(-2/5)*(15-5y) = 8-2y
(-8x+12):(-4) = 2x-3
(6-9x):3= -3x+2
-2*(8-2,1x+1/2y) = -16+4.2x-y
0,3*(-5+3y)= -1.5+0.9y
2x-5y+0,3:2 = 2x-5y+0.15
1.
4x - 5 - 2x + 8 = 2x + 3
2.
3,2k - 6k + 8 - 3,2k - 20,7 = - 6k - 12,7
3.
- 7y - 5 - 3,2y = - 10,2y - 5
4.
3/5x - a - 8/5x - a = - 2a - 5/5x = - 2a - x
5.
5 * (8 + 7x) = 40 + 35x = 35x + 40
6.
7 * (5x - 4) = 35x - 28
7.
(- 2/5) * (15 - 5y) = - 2 * 15/5 + 2 * 5y/5 = - 30/5 + 10y/5 = - 6 + 2y
8.
(- 8x + 12) : (- 4) = - 8x/(- 4) + 12/(- 4) = 8x/4 - 12/4 = 2x - 3
(6 - 9x) : 3 = 6/3 - 9x/3 = 2 - 3x
9.
- 2 * (8 - 2,1x + 1/2y) = - 16 + 4,2x - 2/2y = - 16 + 4,2x - y
0,3 * ( - 5 + 3y) = - 1,5 + 0,9y
10.
2x - 5y + 0,3 : 2 = 2x - 5y + 3/10 * 1/2 = 2x - 5y + 3/20
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Odpowiedź:
Szczegółowe wyjaśnienie:
4x-5-2x+8= 2x+3
3,2k-6k+8-3,2k-20,7= -6k-12.7
-7y-5-3,2y= -10.2y-5
3/5x-a-8/5x-a= -5/5x = -x
5*(8+7x) = 40+35x
(7)*(5x-4)= 35x-28
(-2/5)*(15-5y) = 8-2y
(-8x+12):(-4) = 2x-3
(6-9x):3= -3x+2
-2*(8-2,1x+1/2y) = -16+4.2x-y
0,3*(-5+3y)= -1.5+0.9y
2x-5y+0,3:2 = 2x-5y+0.15
Odpowiedź:
1.
4x - 5 - 2x + 8 = 2x + 3
2.
3,2k - 6k + 8 - 3,2k - 20,7 = - 6k - 12,7
3.
- 7y - 5 - 3,2y = - 10,2y - 5
4.
3/5x - a - 8/5x - a = - 2a - 5/5x = - 2a - x
5.
5 * (8 + 7x) = 40 + 35x = 35x + 40
6.
7 * (5x - 4) = 35x - 28
7.
(- 2/5) * (15 - 5y) = - 2 * 15/5 + 2 * 5y/5 = - 30/5 + 10y/5 = - 6 + 2y
8.
(- 8x + 12) : (- 4) = - 8x/(- 4) + 12/(- 4) = 8x/4 - 12/4 = 2x - 3
(6 - 9x) : 3 = 6/3 - 9x/3 = 2 - 3x
9.
- 2 * (8 - 2,1x + 1/2y) = - 16 + 4,2x - 2/2y = - 16 + 4,2x - y
0,3 * ( - 5 + 3y) = - 1,5 + 0,9y
10.
2x - 5y + 0,3 : 2 = 2x - 5y + 3/10 * 1/2 = 2x - 5y + 3/20