djhawaiiboi djhawaiiboi

02-10-2017
Mathematics

contestada

If (a,-7) is a solution to the equation 8a+3b=3, what is a?

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mongadonga mongadonga

02-10-2017

b=-7
8a+3(-7)=3
8a+(-21)=3
8a-21=3
8a=24

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nycolesmith10 nycolesmith10

02-10-2017

8a=-3(-7)-5
8a=21 -5=16
A=2
Substitue the value -7 for the b in the equation

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