Rozwiąż równania: a) 5x + 2 = 7 - 3x b) -7(x - 2) = 3x - 1 c) 4(x - 1) = 6(1 + x)

a) 5x + 2 = 7 - 3x 5x+3x = 7 -2 2x=5 x=2,5 b) -7(x - 2) = 3x - 1 -7x + 14 = 3x - 1 -7x - 3x = -1 - 14 -10x = -15 /:10 x= 1,5 c) 4(x - 1) = 6(1 + x) 4x - 4 = 6 +6x 4x-6x=6 + 4 2x = 10 x= 5

5x+2=7-3x 5x-3x=7-2 2x=5 x=2,5 -7(x-2)=3x-1 -7x+14=3x-1 -7x-3x=-1-14 -10x=-15 x=1,5 4(x-1)=6(1+x) 4x-4=6+6x 4x-6x=6+4 -2x=10 x=-5

5x+2=7 - 3x 5x + 3x = -2 +7 8x = 5 x= 5/8 -7(x-2)=3x-1 -14x +14=3x-1 -14x-3x=-14-1 -11x=-13 x=1 2/11 4(x-1)=6(1+x) 4x-4=6+6x -2x=10 x=-5