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What are you trying to do?
It looks like you're trying to make an instrumentation amplifier.
No I didn't.
What's your point? I was right, an instrumentation amplifier is commonly used to monitor a Wheatstone bridge.
There's no need for the input resistors which should be removed altogether.The lousy old 741 opamp has a minimum input resistance of only 300k ohms so it will severely mess up this circuit that has 1M ohm input resistors..