Zadanie 1 Rozwiąż równania x+7=10 x-1=6 3x+6=9 5=3+7x 3x+5=2x x=-2x 4-x=1,3 -x-3=x-4 8,3-3x=0,5

A) x+7=10 x=10-7 x=3 B) x-1=6 x=6+1 x=7 C) 3x+6=9 3x=9-6 3x=3 |:3 x=1 D)5=3+7x 5-3=7x 2=7x |:7 2/7=x E)3x+5=2x 3x-2x=-5 x=-5 F)x=-2x 3x=0 |:3 x=0 G)4-x=1,3 4-1,3=x 2,7=x H) -x-3=x-4 1=2x |:2 x=1/2 i) 8,3-3x=0,5 8,3-0,5=3x 7,8=3x |:3 x=2,6

x+7=10 x = 10 -7 x = 3 x-1=6 x = 6+1 x =7 3x+6=9 3x = 9-6 3x = 3 /:3 x = 1 5=3+7x 3 + 7x = 5 7x = 5-3 7x = 2 /:7 x = 2/7 3x+5=2x 3x - 2x = -5 x = -5 x=-2x x + 2x = 0 3x = 0 /:3 x = 0 4-x=1,3 -x = 1,3 - 4 -x = -2,7 / x(-1) x = 2,7 -x-3=x-4 x -4 = -x - 3 x - (-x) = -3 + 4 x + x = 1 2x = 1 /:2 x =1/2 8,3-3x=0,5 -3x = 0,5 - 8,3 -3x = -7,8 /:(-3) x = 7,8 : 3 x =78/10 x 1/3 x =26/10 x = 2,6