Question

ples solve this sum by cross multiplication method
8x+5y=11,x+y=4

Answer 1

Step-by-step explanation:

firstly. x+y=4

x=4-y

now put value of x in equation

8x+5y=11

8(4-y)+y=11

32-8y+5y=11

move 11 to LHS and 5y and 8y to RHS

32-11 = -5y+8y

21=3y now divide 21 by 3 by moving 3 to LHS

21/3 = y

y= 7

and now put value of y in first equation to get value of x

x + y= 4

x + 7 = 4

x= 4-7

x= -3

thus value of x = -3 and y= 7