joanna93 joanna93

02-12-2019
Mathematics

contestada

1) 3х + 8 y = 30
бx +7y = 6

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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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