7x + 7 = 35 2 - x = 5 - 2 69 - x = x +96 ½x +5 = x +8 Całe rozwiązania :P

7x+7 = 35 7x = 35-7 7x = 28 |:7 x = 4 2-x = 5-2 -x = 3-2 -x = 1 |:(-1) x = -1 69-x = x+96 -x-x = 96-69 -2x = 27 |:(-2) x = -13,5 ½x+5 = x+8 0,5x-x = 8-5 -0,5x = 3 |:(-0,5) x = -6

7x+7=35 7x=35-7 7x=28 x= 4 2-x=5-2 -x=5-2-2 -x=1/:(-1) x=-1 69-x=x+96 -x-x=96-69 -2x=27/:(-2) x= -13.5 ½x+5=x+8 ½x-x=8-5 -½x=3/:(-½) x= -6

a) 7x + 7 = 35 7x = 35 - 7 7x = 28 x = 4 b) 2 - x = 5 - 2 -x = 5 - 2 -2 -x = 1 x = -1 c) 69 - x = x +96 -x - x = 96 - 69 -2x = 27 x = -13,5 d) ½x +5 = x +8 ½x - x = 8 - 5 -½x = 3 x = -6