Question

a) a +10=b+10, então a=?
b)a=b, então a+5 =b+?
c)x=3e y=2, então x+y=3+?

Answer 1

a+10=b+10
a = b+10-10
a=b


a=b
a+5=b+5


x=3
y=2
x+y=3+2=5