Question

Item C ) y/2 + y/3 = 3y/4 - 6

Item D) 3y/2 - 3/4 = 1 - 2y

Answer 1

Resolvendo :
~~~~~~~~~~~~
C) y + y = 3y - 6
....__..__...__
......2....3.....4

3y + 2y = 3y - 24
._____.... _____
.........6............4

4*(3y + 2y) = 6*(3y - 24)

12y + 8y = 18y - 144

20y = 18y - 144

20y - 18y = - 144

2y = - 144

y = - 144/2

y = - 72

D) 3y/2 - 3/4 = 1 - 2y

3y + 2y = 1 + 3
__..................__
.2.....................4

3y - 4y = - 4 + 3
______....._____
.......2............. 4

- y = - 1
__....__
..2......4

- 4*y = 2 (-1)

- 4y = - 2.....(-1)

4y = 2

y = 2/4...(÷2)

y = 1/2