1. 2x/3 = 4/7 /-kreska ulamkowa/*21 14x= 12/:14 x= 12/14= 6/7 2. x-2/2 = x+3/3/*6 3(x-2)= 2(x+3) 3x-6=2x+6 x=12 3. 3,2/x = 2/2,1 3,2*2,1=2x 6,72=2x/:2 3,36=x 4. 2x-1.4 = 3x +1/5 2x-3x=1,5+1,4 x= 2,9 5. 3x/5 = 2/3/*15 9x= 10/:9 x= 10/9 6. 2,4/x = 3/3,1 2,4*3,1= 3x 7,44=3x/:3 x=2,48
2x/3 = 4/7 / razy 21 14x=12/:14 x=6/7 2. x-2/2 = x+3/3/*6 3x-6=2x+6 3x-2x=6+6 x=12 3,2/x = 2/2,1/*2,1x 2,1*3,2=2x 6,72=2x/:2 x=3,36 4. 2x-1.4 = 3x +1/5 2x-7/5=3x+1/5 / *5 10x-7=15x+1 10x-15x=1+7 -5x=8 /: (-5) x=-8/5 5. 3x/5 = 2/3 / *15 9x=10/:9 x=10/9 6. 2,4/x = 3/3,1 /*3,1x 3,1*2,4=3x 7,44=3x /:3 x=2,48
