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Addition and Subtraction of Algebraic Expression

How much smal...

Question

How much smaller is 15x-18y+19z than 22x-20y-13z+26?

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Solution

The required result is (22x-20y-13z+26)-(15x-18y+19z)

=22x-20y-13z+26-15x+18y-19z

=7x-2y-32z+26

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