Question 169981
System of Equations with 2 variables



Easy Problem:


{{{system(x+y=10,x-y=4)}}}



Solution: (7,3)


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Medium Problem:


{{{system(2x+y=10,x-2y=4)}}}



Solution: (24/5, 2/5)



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Hard Problem:


{{{system(5x+13y=11,7x-3y=-22)}}}



Solution: (-253/106,187/106)




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System of Equations with 3 variables



Easy Problem:


{{{system(x+y+z=10,x-y+z=4,2x+3y-z=11 )}}}



Solution: (3,3,4)


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Medium Problem:


{{{system(2x+6y+3z=2,4x-2y+2z=14,2x+2y-z=10)}}}



Solution: (43/10,-1/5,-9/5)


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Hard Problem:


{{{system(4x+6y+8z=13,3x-7y+z=14,2x+5y-z=12 )}}}



Solution: (707/135, 5/54, -287/270)


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