Question

Dodawanie i odejmowanie wyrażeń algebraicznych a.3x-1+(4y-3)= b.7,5-x-3/4+(2,8a+x-1)= c.650+3746x-1+(2864x+3)= d.3,5-x-y+(x+y+7,4)= e.-6,5-2,8x-1y+(2,8y-1)= f.6 4/5x-1+(2x-3)= g.3-(2x-7/8-3,5)= h.25a-1-(-3,8a-1)= i.2 3/4-3x-y-(x-3 8/10)= j.75664-3x-(6688+2x)= k.0,8x-3 5/9-(3 5/9-x)= l.110-110x-(-110x-y)=

Answer 1

a.3x-1+(4y-3) = 3x-1+4y-3 = 3x+4y-4

 

b.7,5-x-3/4+(2,8a+x-1) = 7,5-x-3/4+2,8a+x-1 = 2,8a+7,5-0,75-1 = 2,8a+5,75

 

c.650+3746x-1+(2864x+3) = 650+3746x-1+2864x+3 = 6610x+652

 

d.3,5-x-y+(x+y+7,4) = 3,5-x-y+x+y+7,4 = 10,9

 

e.-6,5-2,8x-1y+(2,8y-1) = -6,5-2,8x-1y+2,8y-1 = -2,8x+1,8y-7,5

 

f.6 4/5x-1+(2x-3) = 4/5x-1+2x-3 = 2 4/5x-4

 

g.3-(2x-7/8-3,5) = 3-2x+7/8+3,5 = -2x+3+3 4/8+7/8 = -2x+6 11/8 = -2x+7 3/8

 

h.25a-1-(-3,8a-1) = 25a-1+3,8a+1 = 28,8a

 

i.2 3/4-3x-y-(x-3 8/10) = 2 3/4-3x-y-x+3 8/10 = -4x-y+2,75+3,8 = -4x-y+6,55

 

j.75664-3x-(6688+2x) = 75664-3x-6688-2x = -5x+68976

 

k.0,8x-3 5/9-(3 5/9-x) = 0,8x-3 5/9-3 5/9+x = 1,8x-6 10/9 = 1,8x-7 1/9

 

l.110-110x-(-110x-y) = 110-110x+110x+y = y+110

Answer 2

a. 3x-1+(4y-3)=3x-1+4y-3 = 3x+4y -4

 

 

b. 7,5-x-3/4+(2,8a+x-1) =  7,5-x-3/4+2,8a+x-1 = 5,75+2,8a

 

 

c. 650+3746x-1+(2864x+3) =   650+3746x-1+ 2864x+3 = 6610x+652

 

 

d. 3,5-x-y+(x+y+7,4) =   3,5-x-y+x+y+7,4  = 10,9 

 

 

e. -6,5-2,8x-1y+(2,8y-1) =  -6,5-2,8x-1y+2,8y-1  = -2,8x+1,8y-7,5

 

 f. 6 4/5x-1+(2x-3) =  6,8x-1+2x-3  =8,8x-4

 

 

g. 3-(2x-7/8-3,5) =  3-2x+0,875+3,5 = -2x+7,375

 

h. 25a-1-(-3,8a-1) =  25a-1+3,8a+1 = 28,8a

 

 

i. 2 3/4-3x-y-(x-3 8/10) =  2,75-3x-y-x+3,8 = -2x - y + 6,55

 

 j. 75664-3x-(6688+2x) =  75664-3x- 6688-2x  =-5x +  68976

 

 

k. 0,8x-3 5/9-(3 5/9-x) =  0,8x-3 5/9-3 5/9+x = 1,8x - 7,(1)

 

 

 l. 110-110x-(-110x-y) =  110-110x+110x+y = y+110

 

Jeśli pomogłem to liczę na naj.