a) 2x-2=7-6x b)6(x-2x+1)=36-x C)3-x=x-2x d)3(x-5)+7=x+1 e)2(x+7)=3(2x-5) f)x-4(3-5x)=3(-4=7x) kto jest w 6 klasie i zrobi to dobrze dam naj
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a)
2x-2=7-6x
2x + 6x = 7 + 2
8x = 9
x = 9/8
x = 1 i 1/8
b)
6(x-2x+1)=36-x
6(-x + 1) = 36 - x
-6x + 6 = 36 - x
-6x + x = 36 - 6
-5x = 30 /:(-5)
x = -6
C)
3-x=x-2x
3 - x = - x
-x + x = -3
0 = -3
równanie nie posiada rozwiazania
d)
3(x-5)+7=x+1
3x - 15 + 7 = x + 1
3x - 8 = x + 1
3x - x = 1 + 8
2x = 9
x = 9/2
x = 4,5
e)
2(x+7)=3(2x-5)
2x + 17 = 6x - 15
2x - 6x = -15 - 17
-4x = - 32 /:(-8)
x = 8
f)x-4(3-5x)=3(-4=7x) coś tu nie gra w zapisie