Question

3x – 5y = 7
2x + 3y = 30

Answer 1

multiply the first one by 3, the second by 5. add and the y's will drop out

Answer 2

\[9x-15y=21\]
\[6x+15y=150\]

Answer 3

oops

Answer 4

second one should be \[10x+15y=150\]

Answer 5

add and get
\[19x=171\]
\[x= \frac{171}{19}\] ugh