Question

X+Y=12 XY=7 find the value of x and y

Answer 1

Answer:

x+y=12------>equation 1

xy=7-------->equation 2

y=12-x;

substute the x value in equation 2;

x(12-x)=7 ;

x=7 or x=12-7 => x=7 or x=5;

if x=7 then y=12-7 => y=5;

if x=5 then y=12-5 => y=7;

Step-by-step explanation: