Question

Add the following: 4x + 5y – 6z, -2x + 5z – 9y, -3x + 9y – 10z

Answer 1

Answer:

Step-by-step explanation:

( 4x + 5y - 6z ) + ( - 2x + 5z - 9y ) + ( - 3x + 9y - 10z )

= ( 4x - 2x - 3x ) + ( 5y - 9y + 9y ) + ( - 6z + 5z - 10z ) (∵ like terms )

= ( 4x - 5x ) + ( 5y ) + ( - 16z + 5z )

= - x + 5y + ( - 11z )

= - x + 5y - 11z is the answer. (∵ + × - = - )

Answer 2

Answer:

Step-by-step explanation:

First we need to put them in bracket ,

( 4x + 5y - 6z ) + ( -2x + 5z - 9y ) + ( -3x + 9y - 10z )

Then put all x`s , y`s and z`s together means like terms

( 4x - 2x - 3x ) + ( 5y - 9y + 9y ) + ( -6z + 5z - 10z )

( 4x - 5x ) + ( 5y ) + ( - 16z + 5z)

x + 5y + ( -11z )

Your Final answer is ,

x + 5y - 11z