a) 8k+19=-8k+19 b) -9z-7=-z-6 c) -s+15=4s-14 d) 17y+28= 19y+27 Pomóżcie, potrzebne mi szybko na jutro !!!

a) 8k+19=-8k+19 8k + 8k = 19 - 19 16k = 0 k=0 b) -9z-7=-z-6 -9z +z = -6 +7 -8z = 1 // : (-8) z = - 1 c) -s+15=4s-14 -s - 4s = -14 - 15 -5s = -29 // : (-5) s= 5,8

8k+19=-18k+19 8k+8_=19-19 16k=0 k=0 -9z-7=-z-6 -9z+z=-6+7 -8z=1/:(-8) z=-1/8 -s+15=4s-14 -s-4s=-14-15 -5s=-29/:(-5s) s=29/5 17y+28=19y+27 17y-19y=27-28 -2y=-1/:(-2) y=1/2

a) 8k+19=-8k+19 8k+8k=19-19 16k=0|:16 k=0 b) -9z-7=-z-6 -9z+z=-6+7 -8z=1|:(-8) z=- 1/8 c) -s+15=4s-14 -s-4s=-14-15 -5s=-29|:(-5) s=5,8 d) 17y+28= 19y+27 17y-19y=27-28 -2y=-1|:(-2) y=1/2