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 -7x=3-5 -7x=-2/:-7 x=2/7 e)1/2x=11/x2 x=22 f)4/9x=1/3/x9/4 x=3/4 g)1/3x+1=5 1/3x=5-1 1/3x=4/x3 x=12 h)3x+5=2x 3x-2x=-5 x=-5 i)x=-2x x+2x=0 3x=0 x=0 j)4-x=1,3 -x=1,3-4 -x=-2,7/x-1 x=2,7 k)-x-3=x-4 -x-x=-4+3 -2x=-1/:-2 x=1/2 l)8,3-2x=0,5 -2x=0,5-8,3 -2x=-7,8/:-2 x=3,9 m)1/2x=1/3x-1 1/2x-1/3x=-1 3/6x-2/6x=-1 1/6x=-1/x6 x=-6 n)1/2-x=-1/2x -x+1/2x=-1/2 1/2x=-1/2/x2 x=-1 o)1/2x+1/5x-1/10x=2 5/10x+2/10x-1/10x=2 6/10x=2x10/6 x=20/6 x=3 i 2/10
x+7=10 |-7 x=3 x-1=6 |+1 x=7 3x+6=9 |-6 3x=3 |:3 x=1 5=3+7x |-3 7x = 2 |:7 x=2/7 1/2x=11 |*2 x=22 4/9x=1/3 |*9 4x = 3 |:4 x=3/4 1/3x+1=5 |-1 1/3x = 4 |*3 x=12 3x+5=2x |-3x -x=5 |*(-1) x=5 x=-2x x=0 4-x=1,3 |-4 -x = -2,7 x=2,7 -x-3=x-4 |+x -3=2x-4 |+4 2x = 1 |:2 x=1/2 8,3-2x=0,5 |+2x 8,3 = 2x+0,5 |-0,5 2x = 7,8 |:2 x= 3,9 1/2x=1/3x-1 |-1/3x 1/6x = -1 |*6 x=-6 1/2-x=-1/2x |+x 1/2 = 1/2x |*2 x=1 1/2x+1/5x-1/10x=2 5/10x+2/10x-1/10x = 2 6/10x = 2 3/5x = 2 |*5/3 x=10/3
x=3 x=7 x=1 x=2/3 x=22 x=3/4 x=12 x=5 3x=0 x=2,7 x=3,9 x=-1 x=1 x=3 1/3
