Rozwiąż równania : a) (x + 4) - (3 - 2x) = (3x+4) - (6 + x) b) -(3 - x) +(2x + 2)= -(1-2x) + (2x - 15) bez błędów proszę :D
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a)
(x + 4) - (3 - 2x) = (3x+4) - (6 + x)
x + 4 - 3 + 2x = 3x + 4 - 6 - x
3x + 1 = 2x - 2
3x - 2x = - 2 - 1
x = -3
b)
-(3 - x) +(2x + 2)= -(1-2x) + (2x - 15)
-3 + x + 2x + 2 = -1 + 2x + 2x - 15
-1 + 3x = 4x - 16
3x - 4x = -16 + 1
-x = -15
x =15
a) (x + 4) - (3 - 2x) = (3x+4) - (6 + x)
x + 4 - 3 + 2x = 3x + 4 - 6 - x
3x + 1 = 2x - 2
x = -3
L: -3 + 4 - 3 + 2.(-3) = -8
P: 3.(-3) + 4 - 6 - (-3) = -8
L = P
b) -(3 - x) +(2x + 2)= -(1-2x) + (2x - 15)
-3 + x + 2x + 2 = -1 + 2x + 2x - 15
3x - 1 = 4x -16
-x = -15
x = 15
L: -3 + 15 + 2.15 + 2 = 44
P: -1 + 2.15 + 2.15 - 15 = 44
L = P
Pozdrawiam :)