Question

Rozwiaz rownania:

a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7)
b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7)
c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6)
d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x)

z gory dzieki DZIEKI

Answer 1

A) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7)
b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7)
c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6)
d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x)


a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7)
3-2x-x-4-2x-5 = 3x-4-5x-7
-6-5x=-2x-11
-3x=-5 l:(-3)
x=5/3


b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7)
4-x-2x-3-x+4=-2x+3-x-7
5-4x=x-4
-5x=-9 l:(-5)
x=9/5


c) (4x-5)+(x-7)-(2x-8)=(-3x+4)-(x-6)
4x-5-x+7-2x+8=-3x+4-x+6
x+10=-4x+10
5x=0



d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x)
-4+2x-2x-4=3x-1-2x+5-7+3x
-8=4x+3
-4x=11 l:(-4)
x=11/4

Answer 2

A) (3-2X) - (X + 4) - (2X + 5) = (3X - 4) - (5X +7)
3 - 2X -X - 4 -2X - 5 = 3X - 4 - 5X -7
-6 -5X = -2X -11/+2X
-6 - 3X = -11/ +6
- 3X = -5/ /(-3)
X = 5/3

b) (4-X)-(2X+3)+(X-4)=-(2X-3)-(X+7)
4 - X - 2X - 3 X - 4 = -2X +3 -X -7
-6X = -3X -4/+3X
-3X = -4/ /(-3)
X= 4/3

c) (4X - 5) + (X - 7) - (2X - 8) = ( -3X + 4) - (X - 6)
4X - 5 + X - 7 -2X + 8 = -3X +4 -X + 6
-3X -4 = -4X + 10/+4X
X - 4 = 10/ + 4
X = 6

d) - (4 - 2X) - (2X + 4) = (3X - 1) + (2X - 5) - (7 - 3X)
-4 +2X -2X - 4 = 3X - 1 + 2X - 5 - 7 + 3X
-8 = 8X - 13/+13
5 = 8X//8
5/8 = X