Question

seven times a no added to twice of the same no gives -90

Answer 1

Let the number be x ,

Now,

seven times  of x = 7x

twice of x = 2x

ATQ,

2x +7x =  -90 

9x =  -90 

x  =  $\frac{-90}{9}$

x  =  -10

Now,

the number required here is  -10


i hope this will help you


-by ABHAY

Answer 2

I think this may be the answer