Question

1. Rozwiąż równania. a) 2x - 5 = 7x + 9

b) 3x - 4 = 8x - 7

c) x/3 + 1 = x/2 - 2

d) 2 ( x + 1 ) = 3x - 1

e) x/4 = 2 ( x - 1 )

f) ( 2x - 3 )⁵⁰ = 1

g) x ( x + 1 ) ( 2x- 3 ) = 0

* ⁵⁰ - do kwadratu . ;)

Answer 1

a) 2x-7x=5+9

-5x=14

x=-3 4/5

b)3x-8x=-7+4

-5x=-3

x=3/5

c)x/3+1=x/2-2   /*6

2x+6=3x-12

2x-3x=-12-6

-x=-18

x=18

d)2x+2=3x-1

2x-3x=-1-2

-x=-3

x=3

e)x/4=2x-2  /*4

x=8x-8

x-8x=-8

-7x=-8

x=8/7= 1 1/7