Rozwiąż równania:
a) 4 (1- 3/4x)=34
b)9* x+2/3=x-5
c)4 (5+2x)=6 (2x-4)
d)5 (-2x-2/5)+7=25-6x
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a) 4 (1- 3/4x)=34
4 - 3x = 34
-3x = 34 - 4
-3x = 30 /:(-3)
x =- 10
b)9* x+2/3=x-5
3(x+2) = x - 5
3x + 6 = x -5
3x - x = -5 - 6
2x = -11 /:2
x = - 5 1/2
c)4 (5+2x)=6 (2x-4)
20 + 8x = 12x - 24
8x - 12x = -24 - 20
-4x = -44 /:(-4)
x = 11
d)5 (-2x-2/5)+7=25-6x
-10x - 2 + 7 = 25 - 6x
-10x + 6x = 25 +2 - 7
-4x = 20 /:(-4)
x = -5
a)
b)
c)
d)