algebra
posted by zac on .
pleae help solve: 3x5y=7 and 5x2y=1

3x5y=7 times 5 15x25y=35
5x2y=1times 3 15x 6y=3
subtract second from first
0x 19y = 38
y = 2
3x5(2) = 7
3x +10 =7
3x = 3
x = 1
check
3(1) 5(2) = 7 yes
5(1)2(2)=1 yes 
25y to the second power times x to the second power plus 20xy to the second power plus 4x to the second power