Odpowiedź:
n) 3 = -3(5x + 2) - 6(3x - 7)
3 = -15x - 6 - 18x + 42
33 = -33x
o) 8(2x - 1) + 3(4 - 5x) = 0
16x - 8 + 12 - 15x = 0
x = - 4
p) 2(9y - 1) - 3(2y + 1) + 1 = 5(4y + 3)
18y - 2 - 6y - 3 + 1 = 20y + 15
- 8y = 19
y = - 2,375
q) x + 8 = (23 - x) - (15 - 2x)
x + 8 = 23 - x - 15 + 2x
0 = 0 - równanie sprzeczne
r) 4x + (3 + 3x) = 5(x - 2)
4x + 3 + 3x = 5x - 10
2x = - 13
x = - 6,5
s) 6(2x + 1) = 3(3x - 8)
12x + 6 = 9x - 24
3x = - 30
x = - 10
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Odpowiedź:
n) 3 = -3(5x + 2) - 6(3x - 7)
3 = -15x - 6 - 18x + 42
33 = -33x
o) 8(2x - 1) + 3(4 - 5x) = 0
16x - 8 + 12 - 15x = 0
x = - 4
p) 2(9y - 1) - 3(2y + 1) + 1 = 5(4y + 3)
18y - 2 - 6y - 3 + 1 = 20y + 15
- 8y = 19
y = - 2,375
q) x + 8 = (23 - x) - (15 - 2x)
x + 8 = 23 - x - 15 + 2x
0 = 0 - równanie sprzeczne
r) 4x + (3 + 3x) = 5(x - 2)
4x + 3 + 3x = 5x - 10
2x = - 13
x = - 6,5
s) 6(2x + 1) = 3(3x - 8)
12x + 6 = 9x - 24
3x = - 30
x = - 10