Question

Subtract - p + 69 - r from the sum of 2p - 5q + 4r and 2p + 89 - 3r.​

Answer 1

$\huge\mathbb{\fcolorbox{aqua}{red}{\fcolorbox{aqua}{orange}{ANSWER....!!!}}}$

= [( 2p - 5q + 4r ) + ( 2p + 89 - 3r)] - ( -p + 69 - r )

= ( 2p + 2p - 5q + 4r - 3r + 89) + p - 69 + r

= ( 4p - 5q + r + 89 ) + p - 69 + r

= 4p + p - 5q + r + r + 89 - 69

= 5p - 5q + 2r + 20

$\huge\mathbb{\fcolorbox{aqua}{red}{\fcolorbox{aqua}{orange}{</strong></p><p><strong>= 5p - 5q + 2r + 20</strong><strong>}}}$