Question

what should be added to -2y to get -10y​

Answer 1

let the unknown number is X

-2y+X=-10y

X=-10y+2y

X=-8y

hence -8y is added to -2y to get -10y

Answer 2

Answer:

we should subtract -10y from -2y

let's solve

-2y - ( -10y )

-2y + 10y

-8y answer

8y should be added let's check

-2y -  8y

10y

hence proove

hope help you!!!!