Question

7x+ 4y=18; 4x+ 3y=17 तर x+y=?

Answer 1

$↪7x+4y=18↪4x+3y=17MULTIPLYING (1) BY 4 AND (2) BY 7 WE GET28x+16y=7228x+21y=119SUBTRACTING (3) FROM (4) WE GET5y=47⇒y=47/5PUTTING THE VALUE OF y IN (1) WE GET:x= -14/5ADDING x AND y WE GET33/5 ■$

ANSWER IS 33/5 OR 6.6

HOPE IT HELPS