Question

(a) From the sum of 3x - y + 11 and - y-11, subtract 3x - y - 11.
(b) From the sum of 4 + 3x and 5 - 4x + 2x2 subtract the sum of​

Answer 1

${ \large{[(3x - y + 11) + ( - y - 11)] - (3x - y - 11) }}\\ \\ = > [3x - y + 11 - y - 11] - 3x + y + 11 \\ \\ = > 3x - y + 11 - y - 11 - 3x + y + 11 \\ \\ = > { \red{- y + 11}} = { \red{11 - y}}$

$<b>This is Answer to Question (a), As your question (b) isn't complete, it hasn't been solved.$