3(y+6)-y=2(y+9) 3y + 18 - y = 2y + 18 3y - y - 2y = 18 - 18 0=0
(x-7)-2(3x+5)=3 x - 7 -6 - 10 = 3 x = 26
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pokry2
A ) x = 10 b) x = 3 c) x = -3 d) x =- 2 1/2 e) 2x + 2 = x x= -2 f) -6t - 2t = 6 -8t = 6 t = - 3/4 g) -4 - x = 6 - 2x x = 10 h) 0 = 0 i) -5x = 20 x = -4 golega wyzej ma błedy z przenoszeniem i odejmowaniem ..!
-5x = - 10 /: 5
x= 2
2x - 2 = 7 - x
2x + x = 7+2
3x = 9 /:3
x = 3
10 = 4 - 2x
2x = 10 + 4
2x = 14
x = 7
-(2x-1)=4
- 2x + 1 = 4
- 2x = 3
x = - 2/3
2(x+1)=x
2x + 2 = x
x = -2
2t-(3t+1)=6
2t - 3t - 1 = 6
- t = 5
t = -5
-(4+x)=2(3-x)
- 4 -x = 6 - 2x
x = 10
3(y+6)-y=2(y+9)
3y + 18 - y = 2y + 18
3y - y - 2y = 18 - 18
0=0
(x-7)-2(3x+5)=3
x - 7 -6 - 10 = 3
x = 26
b) x = 3
c) x = -3
d) x =- 2 1/2
e) 2x + 2 = x
x= -2
f) -6t - 2t = 6
-8t = 6
t = - 3/4
g) -4 - x = 6 - 2x
x = 10
h) 0 = 0
i) -5x = 20
x = -4 golega wyzej ma błedy z przenoszeniem i odejmowaniem ..!