Question

rozwiąż rówanaia:

a) (8x-9)+(3x-7)=(5x-3)+(2x-1)

b) (89x+62)-(53x+87)=(67x+58)-(43x+47)

c) 3(4x+8)+2(5x+3)=2(3x+10)+3(3x+15)

d)(3x-4)(5x+3)+(4x-3)(6x+3)=(6x-6)(8x+3)-(9xkwadrat-10)

Answer 1

a)8x+9+3x-7 = 5x-3+2x-1

11x+2=7x=4

3x=2

x= ⅔

b)89x+62-53x-87=67x+58-43x-47

36x-25=24x+11

12x=36

x=3

c)12x+24+10x+6=6x+20+9x+45

22x+30=15x+65

7x=35

x=5

d) 15x²+9x-20x-12+24x²+12x-18x-9=48x²+18x-48x-18-9x²+10

39x²-17x-21=39x²-30x-8

13x=29

x=2