Question

solve 21-3y=-3 by systematic method​

Answer 1

Step-by-step explanation:

21 - 3y = -3

-3y = -3 - 21

-3y = -24

y = -24/-3

y = 8

Answer 2

Answer:

ANSWER GIVEN BELOW

Step-by-step explanation:

The given equation is 21 - 3y = -3.

We will solve this equation using transposition method.

Therefore, 21 - 3y = -3

               = -3y = -3-21 (sign will change after transposing 21 from LHS to RHS)

               = -3y = -24

               = 3y = 24 (both the sides will become positive if both of them are

                                negative as given in the above step)

               = y = 24/3 (sign will change after transposing 3 from LHS to RHS)

               = y = 8

Therefore, the solution to this equation is 8 (y = 8).