Question

the product of a number y and -6 equals to the sum of same number y and 21. Write an equation,sole it and chech answer

Answer 1

The equation will be :-
y + (-6) = y + 21
y-y = 27

Answer 2

This equation is true


-6*y=-6y is also equal to y+21

-6y=y+21

-6y-y=21

-7y=21

-y=21/7=

-y=3

y=-3

________________

Verification

-3*-6=+18

And

-3+21=+18

_______________

Hence my answer is correct