Question

let's find, what must be subtracted from-11x-7y-9z to get-7x+3y-5z​

Answer 1

Step-by-step explanation:

-11x - 7y - 9z - ( -7x + 3y - 5z)

= -11x - 7y - 9z + 7x - 3y + 5z

= (-11x + 7x) + (-7y - 3y) + (-9z + 5z)

= -4x - 20y - 4z [Answer]

Answer 2

Given :

• ${\sf{- \:11x \;- \;7y \;- \;9z\; - \;\bigg(-7x\:+\:3y\:-\:5z\bigg)}}$

To find :

• Find x, y, z ?

Solution :

${\sf{- \:11x \;- \;7y \;- \;9z\; + \;7x\:-\:3y\:+\:5z}}$

${\sf{\bigg(-11x\:+\;7x\bigg)\:+\; \bigg(-7y\:-\;3y\bigg)\:+\; \bigg(-9z\:+\:5z\bigg)}}$

:$\implies$${\underline{\boxed{\frak{\pink{-4x\:-\:20y\:-4z}}}}}$★

$~~~~$$\qquad\quad\therefore{\underline{\textsf{\textbf{Hence, Proved!}}}}$

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