Question

: x= -12 is the solution of the linear equation
5x -3(2x + 1) = 21+x prove how ​

Answer 1

Answer:

add the value of x in the equation. If both sides are equal, it is proved.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

1. given that x
2. $= 5x - 3(2x + 1) = 21x$
3. $5 \times ( - 12) - 3(2 \times ( - 12) + 1) = 21 - 12$
4. $- 60 - 3( - 24 + 1) = 11$
5. $- 60 - 3 \times ( - 23) = 11$
6. $- 60 + 69 = 11$