I need help doing these questions asking for two column proofs.

Find the solution of system of equation y= x-4 y=4x+2

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.

2x + 3y = 17 5x + 6y = 32 usibg method if elimination