Answer & Explanation
ANS: 21
(1) equ =>10 + 10 + 10 = 30
(2) equ =>10 + 2X + 2X = 18 => 10 + 4X =18 => 4X =18-10=8=> X=2
(3) equ =>2X-2Y=2=> 2(2)-2Y=2=> 4-2Y=2=> -2Y=2-4=-2=> Y=1
(4) equ => Y+10*X= 1+10*2 = 1+20= 21
(1) equ =>10 + 10 + 10 = 30
(2) equ =>10 + 2X + 2X = 18 => 10 + 4X =18 => 4X =18-10=8=> X=2
(3) equ =>2X-2Y=2=> 2(2)-2Y=2=> 4-2Y=2=> -2Y=2-4=-2=> Y=1
(4) equ => Y+10*X= 1+10*2 = 1+20= 21
