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Problem: Addition subtraction 7y+2x=11,3x-y=5 [ Calculator, Method and examples ]

Your problem `->` Addition subtraction 7y+2x=11,3x-y=5



and `3x-y=5`

`=>2x+7y=11 ->(i)`

`=>3x-y=5 ->(ii)`

Adding Equation `(i)` and `(ii)`, we get


`=>5x+6y=16 ->(iii)` (On simplifying)

Subtracting Equation `(ii)` from `(i)`, we get


`=>x-8y=-6 ->(iv)` (On simplifying)

Now solving these equations `(iii)` and `(iv)` using substitution method

`5x+6y=16 ->(1)`

and `x-8y=-6 ->(2)`

Taking equation `(2)`, we have


`=>x=8y-6 ->(3)`

Putting `x=8y-6` in equation `(1)`, we get







`=>y=1 ->(4)`

Now, Putting `y=1` in equation `(3)`, we get





`:. x=2" and "y=1`

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