It cost $5 for his brother's ticket.
Step-by-step explanation:
Let,
Micheal's ticket price= x
His brother ticket price = y
According to given statement;
x+y=12 Eqn 1
y = x-2 Eqn 2
Putting value of y from Eqn 2 in Eqn 1
[tex]x+(x-2)=12\\x+x-2=12\\2x=12+2\\2x=14\\[/tex]
Dividing both sides by 2;
[tex]\frac{2x}{2}=\frac{14}{2}\\x=7[/tex]
Putting x=7 in Eqn 2
[tex]y=7-2\\y=5[/tex]
It cost $5 for his brother's ticket.
Keywords: linear equation, substitution method
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