1 uzduotys:
2(x + 7x) = 2 * x // 2 * 7x // 2x + 14x = 16x
x = 16 : 2
x = 8
-------------------------------------------------------
17x - 25x + 5 = 2 + 16x
-8x + 5 = 2 + 16x
-8x - 16x = 2 + 5
-25x = 7
x = 7 : -25
x = -0.28

2 uzduotys:
4(5x + 6x) = 4 * 5x = 20x  // 4 x 6x = 24x
44x
x = 44 : 2
x = 22 (apacia 22)
11x - 22x + 33 = 7 + 44x
-11x + 44x = 33 - 7
33x = 26
x = 26 : 33
x = 26/33
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3 uzduotys:
5(3x + 10x) = 5 * 3x = 15x // 5 * 10x = 50x
15x + 50x = 65x
x = 65: 2 = 32.5
2x - 125x + 55 = 20 + 65x
-123x + 65x = 20 + 55
-58x = 75
x = 75 : -58
x = 75/-58