Answer:
-17 x + 60 y + 33
Step-by-step explanation:
3(7-3x+8y)-4(2x-9y-3)
Distribute
21 -9x+24y -8x +36y +12
Combine like terms
21+12 -9x-8x+24y +36y
33 -17x +60y
Rearringing the terms
33 - 17x + 60y
3(7-3x+8y) - 4(2x-9y-3)
distribute the 3 and the -4
21 - 9x + 24y - 8x + 36y +12
simplify
