Rozwiąż równania.
a) 4 (x + 2) = 2 (x + 2) + 5
b) 3 (x-5) = 2x + 2x + 6
c) 5 (x+8) + x = 4 - x
d) 3 (x+2) = 1- (x+3)
Dam naj. !
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
a) 4(x+2)=2(x+2)+5
4x+8=2x+9
2x=1 /:2
x=0,5
b) 3(x-5) =2x+2x+6
3x-15=4x+6
x=-21
c) 5(x+8)+x=4-x
6x+40=4-x
7x= -36 /:7
x 5,2
d) 3(x+2)=1-(x+3)
3x + 6= 1-x-3
3x+6= -x -2
4x= -10/:4
x=2.5
a)
4(x+2)=2(x+2)+5
4x+8=2x+4+5
4x-2x=4+5-8
2x=1
x=0,5
b)
3(x-5)=2x+2x+6
3x-15=2x+2x+6
3x-2x-2x=6+15
-x=21
x=-21
c) To mi chyba źle wyszło..
5(x+8)+x=4-x
5x+40+x=4-x
5x+x+x=4-40
7x=-36
x=ok.5,14
d)
3(x+2)=1-(x+3)
3x+6=1-x-3
3x+x=1-3-6
4x=-8
x=-2