Q. 43.6( 14 Votes )
Subtract 3x-4y-7z
Answer :
The sum of x – 3y + 2z and -4x + 9y – 11z is calculated as below:
= (x – 3y + 2z) + (-4x + 9y – 11z)
= x – 4x – 3y + 9y + 2z – 11z
= -3x + 6y -9z
Now, The expression 3x- 4y -7z has to be subtracted from the resultant expression i.e. -3x + 6y -9z
= (-3x + 6y -9z) – (3x – 4y – 7z)
= -3x – 3x + 6y + 4y – 9z + 7z
= -6x + 10y – 2z
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