Question

Como resuelvo estos ejercicios:
y-y/5=30
2a-9/2a=0

Answer 1

》y-y/5=30
4y/5=30
y=75/2
》2a-9/2a=0
2a=9/2 a
4a=9a
5a=0
a=0

Answer 2

a
y-y/5=(5y-y)/5=4y/5
4y/5=30
4y=150
y=150/4
b
2a-9/2a=0
-9/2a=-2a
9=4a²
a²=9/4
a=3/2