Sederhanaknlah bentuk aljabar berikut: A. 3 [8x+5(3-x)] - 17 B. 6(2y+z) + 2[5y+3(4z-y+1)] C. 7m+3[4m+5(2-m]-3

A. 3 [8x+5(3-x)] - 17
=3(8x +15 -5x) -17
= 3(3x+15)-17
=9x + 45 -17
= 9x+28

B. 6(2y+z) + 2[5y+3(4z-y+1)
= 12y + 6z +2(5y + 12z -3y +3)
= 12y + 6z +2(2y +12z +3)
=12y + 6z + 4y + 24z + 6
= 16y + 30z + 6

C. 7m+3[4m+5(2-m]-3
= 7m + 3(4m +10- 5m) -3
= 7m + 12m + 30 - 15m -3
=7m + 12m - 15m + 30 - 3
= 4m +27