Brian has 39 cards and Wesley has 48 cards
Step-by-step explanation:
Let w be the number of cards Wesley has
and
b be the number of cards Brian has
Then
[tex]w+b = 87\ \ \ \ Eqn\ 1\\w = 2b-30\ \ \ Eqn\ 2[/tex]
Putting w = 2b-30 in equation 1
[tex]2b-30+b = 87\\3b = 87+30\\3b = 117[/tex]
Dividing both sides by 3
[tex]\frac{3b}{3} = \frac{117}{3}\\b = 39[/tex]
Putting b=39 in equation 2
[tex]w = 2(39)-30\\w = 78-30\\w = 48[/tex]
Hence,
Brian has 39 cards and Wesley has 48 cards
Keywords: Linear equations, variables
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