Practice problem
Solve this system of linear equations using the inverse. {3x+5y=77x−13y=4\begin{cases}3x+5y=7\\7x-13y=4\end{cases}{3x+5y=77x−13y=4
x=2y=1x=2\\y=1x=2y=1
x=32y=12x=\frac32\\y=\frac12x=23y=21
x=52y=12x=\frac52\\y=\frac12x=25y=21
x=12y=23x=\frac12\\y=\frac23x=21y=32
Type a concept, like “slope” or “photosynthesis”.
