5x-3y=81;3x+y=2 solution by simultaneous
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Answer:
3x+y=2
y=2-3x
replace the value of y in first equation.
3x
5x-3(2-3x)=81
5x-6+9x=81
14x-6=81
14x=81+6
14x=87
x=87/14
put value of x in any one equation to calculate y
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