Use mesh analysis to find Vab and io in the circuit.

Can I get a step by step please? TIA

Determine the voltage output from a Wheatstone bridge if four active strain gages are used in an initially balanced bridge to measure a strain of 750 µɛ.  Assume that a digital voltmeter (Rin = infinity) will be used to measure the output voltage and that Sg =2.01   and the supply voltage is 10 volts.  Assume that each gage resistance is 350 ohms.     14.06 mv     7.538 mv     28.12 mv     15.66 mv     3.246 mv