Odpowiedź:
4x – 5 – 7x = 2 – 5x
-3x - 5 = 2 - 5x
2x = 7 /:2
x = 3,5
2(x + 1) + 3(x – 2) = x + 4
2x + 2 + 3x - 6 = x + 4
5x - 4 = x + 4
4x = 8 /:4
x = 2
4x – 5(3 – 2x) = 12 – 9(2x – 5)
4x - 15 + 10x = 12 - 18x + 45
14x - 15 = 57 - 18x
32x = 72 /:32
x=2,25
(2x-5)/3 + (3-2x)/4 = 1 /*12
4(2x-5) + 3(3-2x) = 12
8x - 20 + 9 - 6x = 12
2x = 23 /:2
x = 11,5
(2x-1)/6 - (5x-7)/3 = (3-2x)/2 /*6
1(2x-1) - 2(5x-7) = 3(3-2x)
2x - 1 -10x + 14 = 9 - 6x
4 = 2x /:2
2 = x
Szczegółowe wyjaśnienie:
