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2010-04-15T16:37:49+02:00
2x + 3 = 7
2x = 4 /: 2
x = 2

4 - 3x = -5
-3x = -9 /:(-3)
x = 3

4x+5-x= -7
3x = -12 /: 3
x = -4

3x-6=12
3x = 18 /:3
x = 6
1 5 1
2010-04-15T16:39:48+02:00
A) 2x=7-3
2x=4/2
x=2

b)4-3x=-5
3x=-5-4
3x=-9/3
x=-3

C)4x+5-x=-7
3x=-7-5
3x=-12/3
x=-4

d)3x-6=12
3x=12+6
3x=18/3
x=6
1 5 1