Zadania z matematyki równania :
a) jedna druga x + 6 = 8
b) 2x + 5 = x - 6
c) 4x + jedna druga = x - 3
d) 2x -( -3x +1 ) = 6
e) - ( 3x-6) = - ( 4x -5 )
f) -( -2x+6 ) = - 3x - ( -2 -x )
g) 6x - 5 = x - ( -5x + 2)
h) -( -3x +2 ) =-(4x -6)
i)3x-(-x+2)= 5x + 4
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a)
½x+6=8
½x=8-6
½x=2/:½
x=1
b)
2x + 5 = x - 6
2x-x= -6 - 5
x=-11
c)
4x + ½ = x - 3
4x-x= -3 - ½
3x= -3½ / :3
x=1
d)
2x -( -3x +1 ) = 6
2x+3x-1=6
5x=7 /:5
x=1,4
e)
- ( 3x-6) = - ( 4x -5 )
-3x+6= -4x+5
x= -1
f)
-( -2x+6 ) = - 3x - ( -2 -x )
2x-6= - 3x + 2 +x
4x=8/:4
x=2
g)
6x - 5 = x - ( -5x + 2)
6x - 5 = x +5x -2
0= 3
h)
-( -3x +2 ) =-(4x -6)
3x - 2= -4x +6
7x=8 /:7
x=1
i)
3x-(-x+2)= 5x + 4
3x + x - 2= 5x +4
- x= 6/:(-1)
x= - 6