How do you solve 4x plus 9 plus 3x equals 30?

Answer 1

You've come to the right place. Our Math staff had a sudden cancellation,

and at the last minute, we were able to add this problem to their schedule.

They have responded with the following solution:

4x + 9 + 3x = 30

Combine the 'x' terms on the left side of the equation:

7x + 9 = 30

Subtract 9 from each side:

7x = 21

Divide each side by 7:

x = 3

OR

4x +9+3x = 30

7x+9 = 30

7x=30-9 (Transposing 9 to RHS)

7x=21

x=21/7 (Transposing 7 to Right Hand Side)

x=3

Hence the required answer is 3.