Hasil dari 3a + 3b - 3c × 3d adalah.....(a=20,b=25,c=15, d=35)

3a + 3b - 3c × 3d = 3(20) + 3(25) - 3(15) × 3(35)
= 60 + 75 - 45 × 105
= 60 + 75 - 4.725
= 135 - 4.725
= -4.590

= 3a + 3b - 3c × 3d
= 3 (20 ) + 3 ( 25 ) - 3 ( 15) x 3 (35 )
= 60 + 75 - 45× 105
= - 4590