Please help me with my math homework!?

Question

You and your friend go out to dinner and each pay for your own meal. The total cost of the two meals is $25. Your meal costs $4 more than your friend's meal. How much does each meal cost?

this is wat i got so far:

a+b=25

a+4=b

a is my meal

b is my friends

Answer 1

WOW what a great start, all you have left to do is to substitute what b equals in the second equation into your first equation a + (a + 4) = 25 and solve!