Question

Решите уравнение.
а) 2/3y + 1 = 3
б) 19 + z = 5/9 z + 3
P.S. 2/3 и 5/9 - дроби.

Answer 1

a)2/3y+1=3. b)19+z=5/9z+3
2/3y=3-1. z-5/9z=3-19
2/3y=2. 4/9z=-16
y=2:2/3. z=-16:4/9
y=1/3. z=1/36