а) 3/7x = 2.1x = 2.1 * 7 / 3x = 4.9
б) -14x = 7x = 7 / -14x = -0.5
в) 9x - 7 = 6x + 149x - 6x = 14 + 73x = 21x = 21 / 3x = 7
г) 3*(4 - 2x) + 6 = -2x + 412 - 6x + 6 = -2x + 4-6x - 2x = 4 - 12 - 6-8x = -14x = (-14) / (-8)x = 1.75
а) 3/7x = 2.1
x = 2.1 * 7 / 3
x = 4.9
б) -14x = 7
x = 7 / -14
x = -0.5
в) 9x - 7 = 6x + 14
9x - 6x = 14 + 7
3x = 21
x = 21 / 3
x = 7
г) 3*(4 - 2x) + 6 = -2x + 4
12 - 6x + 6 = -2x + 4
-6x - 2x = 4 - 12 - 6
-8x = -14
x = (-14) / (-8)
x = 1.75