Mathematics
ConsuelaHobler
1

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 , respectively, which expression will eliminate the variable x?

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(1) Answers
Kip

lets work with the equations system: (2/5)x + y = 12 (5/2)y - x = 6 first lets eliminate the fractions multiplying by a suitable number, 5 and 2, each equation: 2x + 5y = 60 5y - 2x = 12 rearrange and add the equations:  2x + 5y = 60 -2x + 5y = 12 ------------------ 0 + 10y = 72 10y = 72 now we have eliminated the x variable and can solve the system

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