Question

Add 3 X + 4 Y + 5z and 6x - 3 Y + 7 Z

Answer 1

The resultant expression is 9x + y + 12z.

Step-by-step explanation:

The two expressions are:

(1) 3x + 4y + 5z

(2) 6x - 3y + 7z

Add the two equations as follows:

(1) + (2) = (3x + 4y + 5z) + (6x - 3y + 7z)

           = (3x + 6x) + (4y - 3y) + (5z + 7z)

           = 9x + y + 12z

Thus, the resultant expression is 9x + y + 12z.