Question

rezolvatimi va rog ecuatiile in multimea R: 2x-1=0; -3/4x=1/5; 0,5x+4=0; 3-2x=0; 1,4+2x=0; -5/7x-1/3=0

Answer 1

2x-1=0 =>2x=1 =>x=1/2

-3x/4 = 1/5 =>x=1/5 · (-4/3) =>x=(-4/15)

0,5x+4=0 =>0,5x=-4 =>x=(-4):0,5 =>x=(-8)

3-2x=0 =>3=2x =>x=3/2

1,4+2x=0 =>1,4=(-2x) =>x=1,4:(-2) =>x=(-0,7)

-5x/7 - 1/3 = 0 =>-5x/7=1/3 =>x=1/3 · (-7/5) =>x=(-7/15)