joanna93
joanna93
02-12-2019
Mathematics
contestada
1) 3х + 8 y = 30
бx +7y = 6
Respuesta :
naythankyouboi
naythankyouboi
02-12-2019
Multiply the first equation my 2 and than subtract the two equations to eliminate x
6x+16y=60-
6x+7y=6
9y=54
Y=6
Then plug in y to one of the equations
6x+7(6)=6
6x+42=6
6x=-36
X=-6
X=-6 Y=6
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