Question

from the sum 2x-y+7 and 2y-10, subtract 4x-2y-11

Answer 1

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Answer 2

Addition,

(2x-y+7) + (2y-10)

= 2x-y+7+2y-10

=2x-y+2y+7-10

=2x+y-3.

Subtraction,

= 4x-2y-11 from 2x+y-3

= (4x-2y-11) - (2x+y-3)

= 2x+y-3-4x+2y+11

= 2x-4x+y-2y-2+11

= -2x+3y-8.