Question

x+y=100 two variable

Answer 1

X=40

Y=60

Precisely

X=100-Y

So the value of x will be 100-Y

Answer 2

x+y=100


this equation is intercept X-axis at (100,0)and at Y-axis at (0,100)


and x=100-y

and y=100-x

this line makes an angle of 135° at X-axis.