How to calculate what a voltmeter measures with multiple resistors?

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Rasias
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Homework Statement
Calculate what the voltmeter measures
Relevant Equations
Req=R1+R2+...+Rn
I tried to solve it by removing the voltmeter and simplifying it to just one resistor, then calculate the individual volts and then the deltaV, but still didn't found the answer, can you guys help me?
Screenshot_2019-04-06-22-50-03.png
 
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If you take out the voltmeter for the moment, do you see that you have two voltage dividers? Does that help?
 
What if you redraw the circuit? Redraw, without the voltmeter, and with R1 & R3 in a straight vertical line, and parallel to that, R2 & R4 in a straight vertical line. The new drawing should be equivalent to the original (ignoring the lack of the voltmeter). Now, as @lewando said, do you see that you have two voltage dividers? If you want help understanding how leaving the voltmeter out (for analysis purposes) can be valid, just ask for another hint.
 
haruspex said:
Per forum rules, please post your attempt.
This is not haruspex being excessively fussy -- Physics Forums scolds us if we do not require you to make an attempt. And it will help your learning process. (In fact, I might be scolded for the tip I gave you earlier.)