Question

find one solution of the equation 0x + 3y - 7 = 0

Answer 1

0x+3y-7 = 0 is nothing but 
3y-7=0
3y=7
y=7/3
so 7/3 is the one solution of thee equation given
and the 'x' value can be any number because any value which multiply with 0 gives the result 0
so x may be -4, 2, 8 ,100, 42, etc i.e., any value

Answer 2

hey mate here is your answer

0x+3y-7=0

zero into anything is zero

so x value is anything

3y-7=0
3y=7
y=7/3