a)
c)
e)
b)
d)
f)
Odpowiedź:
a) (x - 13) - (x - 5) + 2x = 0
x - 13 - x + 5 + 2x = 0
2x = 8
x = 4
b) (5 - y) + (6 - y) - (5 - y) = 0
5 - y + 6 - y - 5 + y = 0
y - 6 = 0
y = 0
c) x - (1 - 2x) + (x - 3) = - 4
x - 1 + 2x + x -3 = (-4)
4x - 4 = (-4)
4x = 0
x = 0
d) (x+3)-2x-(1-3x)=2
x + 3 - 2x - 1 + 3x =2
2x + 2 = 2
2x = 0
e) 5y - 3[7 - (1 - 2y)] = 0
5y - 21 + 3 (1 - 2y) = 0
5y - 21 + 3 - 6y = 0
- y -18 = 0
y = - 18
f) 1 5 *[4(x+2)-(3-x)]=4
60(x + 2) - 15(3 - x) = 4
60x + 120 - 45 + 15x = 4
75x + 75 = 4
75x = - 71
x = -71/75
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a)
c)
e)
b)
d)
f)
Odpowiedź:
a) (x - 13) - (x - 5) + 2x = 0
x - 13 - x + 5 + 2x = 0
2x = 8
x = 4
b) (5 - y) + (6 - y) - (5 - y) = 0
5 - y + 6 - y - 5 + y = 0
y - 6 = 0
y = 0
c) x - (1 - 2x) + (x - 3) = - 4
x - 1 + 2x + x -3 = (-4)
4x - 4 = (-4)
4x = 0
x = 0
d) (x+3)-2x-(1-3x)=2
x + 3 - 2x - 1 + 3x =2
2x + 2 = 2
2x = 0
x = 0
e) 5y - 3[7 - (1 - 2y)] = 0
5y - 21 + 3 (1 - 2y) = 0
5y - 21 + 3 - 6y = 0
- y -18 = 0
y = - 18
f) 1 5 *[4(x+2)-(3-x)]=4
60(x + 2) - 15(3 - x) = 4
60x + 120 - 45 + 15x = 4
75x + 75 = 4
75x = - 71
x = -71/75