if a-b=20 then find a and b
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a+b=180.(1)
a-b=20.(2)
The above equations are called linear equations in two variables.
From(1) a=180-b
Putting a=180-b in (2)
(180-b)-b=20
180-2b=20
-2b=20-180
b=-160/-2
b=80.
putting b=80 in (2)
a-80=20
a=20+80
a=100
There are other methods too to do this but this method is of class 10th maths
a-b=20.(2)
The above equations are called linear equations in two variables.
From(1) a=180-b
Putting a=180-b in (2)
(180-b)-b=20
180-2b=20
-2b=20-180
b=-160/-2
b=80.
putting b=80 in (2)
a-80=20
a=20+80
a=100
There are other methods too to do this but this method is of class 10th maths
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