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a) 2x-9=12
b) 6x +4=2x+3
a) 5x+5x+3x=4x+1
a)
2x-9=12
2x = 12 + 9
2x = 21 /:2
x =10,5
b)
6x +4=2x+3
6x - 2x = 3 - 4
4x = - 1 /:4
x = -1/4
5x+5x+3x=4x+1
13x = 4x + 1
13x - 4x = 1
9x = 1 /:9
x = 1/9
a) 2x=12+9
2x=21
x=10,5
b)6x+4=2x+3
6x-2x=3-4
4x=-1
x=-1/4
c)5x+5x+3x=4x+1
13x-4x=1
9x=1
x=1/9
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a)
2x-9=12
2x = 12 + 9
2x = 21 /:2
x =10,5
b)
6x +4=2x+3
6x - 2x = 3 - 4
4x = - 1 /:4
x = -1/4
a)
5x+5x+3x=4x+1
13x = 4x + 1
13x - 4x = 1
9x = 1 /:9
x = 1/9
a) 2x=12+9
2x=21
x=10,5
b)6x+4=2x+3
6x-2x=3-4
4x=-1
x=-1/4
c)5x+5x+3x=4x+1
13x-4x=1
9x=1
x=1/9