Question

Wyrażenia algebraiczneee
wykonaj działania:
2(-a+3b)-2a=
5x-3(2x+1)+x=
-4x+2(2x+4)-5=
5-2a-3(2a-3)=
5-2a-3(2a-3)=
-7+4(-2x+1)+6x=
-5+4a-3(-3a)+1=

Answer 1

-2a + 6b - 2a =
-4a + 6b

5x - 6x - 3 + x =
- 3

-4x + 4x + 8 - 5 =
3

5 - 2a - 6a + 9 =
-8a + 14
( dalej:
-8a = -14 |:(-8)
a = 1.75 )

-7 - 8x + 4 + 6x =
-3 - 2x
(dalej:
-2x = 3 |:(-2)
x = -1.5 )

-5 + 4a + 9a + 1 =
-4 + 13a
(dalej:
13a = 4 |:13
a = 4/13

Answer 2

2(-a+3b)-2a=2*(-a+3*b)-2*a
5x-3(2x+1)+x=5*x-3*(2*x+1)+x
-4x+2(2x+4)-5=-4*x+2*(2*+4)-5
5-2a-3(2a-3)=5-2*a-3*(2*a-3)
5-2a-3(2a-3)=5-2*a-3*(2*a-3)
-7+4(-2x+1)+6x=-7+4*(-2*x+1)+6*x
-5+4a-3(-3a)+1=-5+4*a-3*(-3*a)+1