solve the problem by two variable
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hukam0685:
two equation are -4x+5y=0, -x+y=1
now solve these equation
sir can you give me the picture of this solution
plzzzzzzzz sir plzzzz help me
sir plzzzz it's urgent
sir only tell me how you form the equations only forming of equation pic
excuse me sir I don't want your help
I solve it
sorry for late,there is some problem with my net connection,so i am unable to upload my answer
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let the number be xy.
this number is represented as 10x+y.
sum of digits of number is x+y.
6(x+y)=10x+y ...eq 1
10y+x+9= 10x+y ....eq2
on simplifies the equation we get
-4x+5y=0 ...eq3
-9x+9y=-9 or -x+y=-1 ...eq4
on substitution of the value of y=x-1 from eq4 into eq3
-4x+5(x-1)=0
x=5
substitute the value of x into eq 4
-5+y=-1
y=4
so the number is 54.
let's check it is correct or not
6(5+4)=54
45+9= 54
so answer is correct.the number is 54.
this number is represented as 10x+y.
sum of digits of number is x+y.
6(x+y)=10x+y ...eq 1
10y+x+9= 10x+y ....eq2
on simplifies the equation we get
-4x+5y=0 ...eq3
-9x+9y=-9 or -x+y=-1 ...eq4
on substitution of the value of y=x-1 from eq4 into eq3
-4x+5(x-1)=0
x=5
substitute the value of x into eq 4
-5+y=-1
y=4
so the number is 54.
let's check it is correct or not
6(5+4)=54
45+9= 54
so answer is correct.the number is 54.
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