solve the equation - 7x - 5y = 74 7x+1 - 5y+1 = 218 Share with your friends Share 8 Shubham Chourasiya answered this Query is not correct . It should be like 7x +5y = 74 7x+1 - 5y+1 = 218 Now 7x +5y = 74 ⇒ 7x = 74 -5y .......17x+1 - 5y+1 = 218⇒7.7x - 5y+1 = 218putting eq 1 in this ⇒7( 74 -5y)- 5y+1 = 218⇒518 -7.5y- 5y+1 = 218⇒5y(-7-5) = 218 -518 = - 300⇒5y = -300 / -12 ⇒5y = 25 ⇒y =2 putting this in eq 1 will you x =2Hope this would have cleared your dooubt . 38 View Full Answer
