Odpowiedź :
a)
11 * x - 6 = 7 * x - 4
11x - 6 = 7x - 4
11x - 7x = -4 + 6
4x = 2 / : 4
x = 0,5
b)
4 * x + 3 = 9 * x - 12
4x + 3 = 9x - 12
4x - 9x = -12 - 3
-5x = -15 / : (-5)
x = 3
a)
11 * x - 6 = 7 * x - 4
11x - 6 = 7x - 4
11x - 7x = -4 + 6
4x = 2 / : 4
x = 0,5
b)
4 * x + 3 = 9 * x - 12
4x + 3 = 9x - 12
4x - 9x = -12 - 3
-5x = -15 / : (-5)
x = 3