Answer all questions, your combing like terms. Show ALL of you work! Thank you!!
1. -5x-13+3y-7x-12y+7
2. -3 (4x-12)
3. If x=7, 6x-282
4. If x= -2 and y=7 6x+2(y+x)
5. x-23=-80
6. 12x= -72
7. x/4 = 12
8. 3x+12=72
9. x/4 - 8= - 80
10. -4 ( 1 - 5n ) - 8n = 92