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elirosejohlandancel
17.02.2021 •
Mathematics
Solve the system by elimination x-3.1y=11.5 -x+3.5y=-13.5
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Ответ:
solving the given equation,
x-3.1y=11.5
-x+3.5y=-13.5
0.4y= -2.5
or, y= -2.5÷0.4
or, y= -6.25
put the value of y in first eqn
x-3.1×(-6.25)=11.5
or, x+ 19.375=11.5
or, x= 11.5-19.375
or, x = -7.875
therefore x = -7.875 and y= -6.25ans.
Ответ:
-6074
Step-by-step explanation: