1.Rozwiaz rownania: a) 1/3(3x-2)=2 b) 2(x+7)=3(2x-5) c) 3(x-5)+7=x+1 Prosze o pomoc!! Daje najj za wytlumaczenie!!

a) 1/3(3x-2)=2 x-2/3=2 /+2/3 x=2⅔ b) 2(x+7)=3(2x-5) 2x+14=6x-15 /-6x , -14 -4x=-29 /:(-4) x=7¼ c) 3(x-5)+7=x+1 3x-15+7=x+1 /-x ,+8 2x=9 /:2 x=4½

b.2(x+7)=3(2x-5) 2x+14=6x-15 2x-6x=-15-14 -4x=-29/-4 x=7,25 c.3(x-5)+7=x+1 3x-15+7=x+1 3x-x=15-7+1 2x=9/2 x=4,5

a) 1/3(3x-2)=2 x-2/3=2 x=2+2/3 x= 2 ⅔ b) 2(x+7)=3(2x-5) 2x+14=6x-15 2x-6x=-15-14 -4x=-29/:(-4) x= 7 ¼ c) 3(x-5)+7=x+1 3x-15+7=x+1 3x-x=15-7+1 2x=9/:2 x= 4 ½