Question

Rezolva in R ecuatiile :



a)2x-6=0 b)2(x+1)-3=2x+5 c)0,5x=-1,25 d)2(x+1)+3x=4(2x+1) e)5(1-x)-2(1-3x)=0 f)(radical din2-10)x=2+radical din 2 va rog explicatimi,nu le prea inteleg ecuatiile aceseta de gradul I.​

Answer 1

Răspuns:

a) 2x=6

X=3

b) 2x+2-3=2x+5

2x-1=2x+5

2x-1-2x+5=0

4=0

c) 5/10x=-125/100

5/10x+125/100=0

50x+125=0

50x=-125

X=-125/50

d)2x+2+3x=8x+4

5x+2=4+8x

5x+2-4-8x=0

-3x-2=0

X=2/3

e) 5-x-2-6x=0

7x+3=0

7x=-3

X=-3/7

f) 2-10 x=4+2

2-10x-4-2=0

4-10x=0

10x=-4

X=-4/10