rozwiąż równanie a) (x + 4) - (3 - 2x) = (3x+4) - (6 + x) b) -(3 - x) +(2x + 2)= -(1-2x) + (2x - 15) Wynik : a)-3 b ) 15
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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
3x -1 = 4x - 16
3x - 4x = -16 + 1
-x = -15 /*(-1)
x = 15
a)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
3x-1=4x-16
3x-4x=-16+1
-x=-15
x=15