а) 1/5x = 13x = 13 * 5x = 65
б) 3y - 11.4 = 03y = 11.4y = 11.4 / 3y = 3.8
в) 4x - 2.5 = x + 54x - x = 5 + 2.53x = 7.5x = 7.5 / 3x = 2.5
г) 16 - 4(4x - 1) = 2x16 - 16x + 4 = 2x16 + 4 - 16 = 2x + 16x4 = 18xx = 4 / 18x = 2 / 9
а) 1/5x = 13
x = 13 * 5
x = 65
б) 3y - 11.4 = 0
3y = 11.4
y = 11.4 / 3
y = 3.8
в) 4x - 2.5 = x + 5
4x - x = 5 + 2.5
3x = 7.5
x = 7.5 / 3
x = 2.5
г) 16 - 4(4x - 1) = 2x
16 - 16x + 4 = 2x
16 + 4 - 16 = 2x + 16x
4 = 18x
x = 4 / 18
x = 2 / 9