a)2x+6=20 b)23+9y+50 c)8y-36=24 d)-4c-46=-2 e)13+2x=3 f)-7=5x+1 g)7x-21=5x h)6y-13=-52 i)4x-4=3

a)2x+6=20 2x= 20-16 2x=14/:2 x=7 b)23+9y+50 9y= 50-23 9y= 27/:9 y= 3 c)8y-36=24 8y= 24+36 8y= 60/:8 y= 7,5 d)-4c-46=-2 -4c= -2+46 -4c= 44/: (-4) c= -11 e)13+2x=3 2x= 3-13 2x=-10/:2 x=-5 f)-7=5x+1 -7-1=5x -8=5x/:5 x= -1³/₅ g)7x-21=5x 7x-5x=21 2x=21/:2 x=10,5 h)6y-13=-52 6y= -52+13 6y= -39/:6 y= 6,5 i)4x-4=3 4x=3+4 4x= 7/:4 x= 1³/₄

a)2x+6=20/-6 2x=14/:2 x=7 b)23+9y=50/-23 9y=27/:9 y=3 c)8y-36=24/+36 8y=60/:8 y=7,5 d)-4c-46=-2/+46 -4c=44/:(-4) c=-11 e)13+2x=3/-13 2x=-10/:(-2) x=5 f)-7=5x+1/-1 -8=5x/:5 x=1,6 g)7x-21=5x/-7x -2x=-21/:(-2) x=10,5 h)6y-13=-52/+13 6y=-39/:6 y=6,5 i)4x-4=3/+4 4x=7/:4 x=1,75 Pozdro :D

a) 2x+6=20 2x=20-6 2x=14 | :2 x=7 b) 23+9y=50-23 9y=27 | :9 y=3 c) 8y-36=24 8y=24+36 8y=30 | :8 y=7,5 d) -4c - 46 = -2 -4c = -2 + 46 -4c = 44 | : (-4) c = 11 e) 13+2x=3 2x=3-13 2x=-10 | :2 x= -5 f) -7=5x+1 -7-1=5x 5x = -8 | : 5 x = -8/5 x = -1 i 3/5 g) 7x - 21 = 5x 7x - 5x = 21 2x = 21 | : 2 x= 21/2 x = 10 i 1/2 h) 6y - 13 = -52 6y= -52+13 6y= -39 | :6 y = -39/6 y = 6,5 i) 4x - 4 = 3 4x = 3+4 4x = 7 | :4 x = 7/4 x = 1 i 3/4